A mining cart is pulled up a hill at 18 km/h and then pulled back down...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
A mining cart is pulled up a hill at 18 km/h and then pulled back down the hill at 36 km/h through its original level. (The time required for the cart's reversal at the top of its climb is negligible.) What is the average speed of the cart for its round trip, from its original level back to its original level? Number i Units A lead ball is dropped in a lake from a diving board 6.30 m above the water. It hits the water with a certain velocity and then sinks to the bottom with the same constant velocity. It reaches the bottom 4.33 s after it is dropped. (a) How deep is the lake? (b) What is the magnitude of the average velocity of the ball for the entire fall? (c) Suppose the water is drained from the lake. The ball is now thrown from the diving board so that it again reaches the bottom in 4.33 s. What is the magnitude of the initial velocity of the ball? (a) Number i Units (b) Number i Units (c) Number i Units A car moving with constant acceleration covered the distance between two points 54.5 m apart in 5.88 s. Its speed as it passes the second point was 14.2 m/s. (a) What was the speed at the first point? (b) What was the acceleration? (c) At what prior distance from the first point was the car at rest? (a) Number i Units (b) Number i Units (c) Number Units Car lengths in trailing. When trailing a car on a highway, you are advised to maintain a trailing distance that is often quoted in terms of car lengths, such as in "stay back by 3 car lengths." Suppose the other car suddenly stops (it hits, say, a large stationary truck). Assume a car length L is 4.50 m, your car speed vo is 29.7 m/s (66.5 mi/h), your trailing distance is nL -10.0L, and the acceleration magnitude at which your car can brake is 8.10 m/s. What is your speed just before colliding with the other car if (a) your reaction time 1, to start braking is 0.610s and (b) automatic braking is immediately started by your car's radar system that continuously monitors the road? What is the minimum value for n needed to avoid a collision with (c) the reaction timet, and (d) automatic braking? (a) Number i Units (b) Number i Units (c) Number i Units (d) Number i Units An object falls a distance h from rest. If it travels 0.500h in the last 1.00 s, find (a) the time and (b) the height of its fall. (a) Number i Units (b) Number i Units A mining cart is pulled up a hill at 18 km/h and then pulled back down the hill at 36 km/h through its original level. (The time required for the cart's reversal at the top of its climb is negligible.) What is the average speed of the cart for its round trip, from its original level back to its original level? Number i Units A lead ball is dropped in a lake from a diving board 6.30 m above the water. It hits the water with a certain velocity and then sinks to the bottom with the same constant velocity. It reaches the bottom 4.33 s after it is dropped. (a) How deep is the lake? (b) What is the magnitude of the average velocity of the ball for the entire fall? (c) Suppose the water is drained from the lake. The ball is now thrown from the diving board so that it again reaches the bottom in 4.33 s. What is the magnitude of the initial velocity of the ball? (a) Number i Units (b) Number i Units (c) Number i Units A car moving with constant acceleration covered the distance between two points 54.5 m apart in 5.88 s. Its speed as it passes the second point was 14.2 m/s. (a) What was the speed at the first point? (b) What was the acceleration? (c) At what prior distance from the first point was the car at rest? (a) Number i Units (b) Number i Units (c) Number Units Car lengths in trailing. When trailing a car on a highway, you are advised to maintain a trailing distance that is often quoted in terms of car lengths, such as in "stay back by 3 car lengths." Suppose the other car suddenly stops (it hits, say, a large stationary truck). Assume a car length L is 4.50 m, your car speed vo is 29.7 m/s (66.5 mi/h), your trailing distance is nL -10.0L, and the acceleration magnitude at which your car can brake is 8.10 m/s. What is your speed just before colliding with the other car if (a) your reaction time 1, to start braking is 0.610s and (b) automatic braking is immediately started by your car's radar system that continuously monitors the road? What is the minimum value for n needed to avoid a collision with (c) the reaction timet, and (d) automatic braking? (a) Number i Units (b) Number i Units (c) Number i Units (d) Number i Units An object falls a distance h from rest. If it travels 0.500h in the last 1.00 s, find (a) the time and (b) the height of its fall. (a) Number i Units (b) Number i Units
Expert Answer:
Posted Date:
Students also viewed these physics questions
-
My House / Your House Direct Materials Direct Labor Overhead* as House 1 $140,000 210,000 ? House 2 $70,000 130,000 ? House 3 $90,000 60,000 ? *Total indirect costs such as supervisory salaries and...
-
Suppose you are a US resident who owns land in London. You are certain that if London booms, your land will be worth 2000 GBP and the exchange rate will be $1.40/GBP. On the other hand, if England's...
-
A mining cart is pulled up a hill at 20 km/h and then pulled back down the hill at 35 km/h through its original level. (The time required for the cart's reversal at the top of its climb is...
-
A Contractors Ltd was formed on 1 January 2012 and the following purchases and sales of machinery were made during the first 3 years of operations. Each machine was estimated to last 10 years and to...
-
Consider a contingency table with two rows and five columns. a. How many degrees of freedom are there in the contingency table? b. Determine the critical value for a = 0.05. c. Determine the critical...
-
Depreciation for Partial PeriodSL, SYD, and DDB Alladin Company purchased Machine #201 on May 1, 2010. The following information relating to Machine #201 was gathered at the end of May....
-
As a leader, what actions demonstrate your trust of other people?
-
Reutter Company manufactures a single product and uses process costing. The companys product goes through two processing departments, Etching and Wiring. The following activity was recorded in the...
-
96) 1 day before closing the seller says the contract was breached & he won't close. the buyer says documents are signed money paid & the signed deed is in escrow. There is no breach. Escrow should:...
-
1. Pretend that you are a mother or a father in a family in the developing country of your choice. What is the rationale for why you must produce a large family? What is the biblical justification,...
-
In Year 4Martha Company's net sales were $185,000, its accounts receivable at the beginning of Year 4 was $35,000, and its accounts receivable at the end of Year 4 was $45,000Calculate the accounts...
-
A medium-size financial services consulting firm, Phillips Financial Services, has been experiencing some workplace culture issues. The founder / CEO, Nick Phillips, has just doubled his staff to 50...
-
The Regal Cycle Company manufactures three types of bicycles-a dirt bike, a mountain bike, and a racing bike. Data on sales and expenses for the past quarter follow: Sales Variable manufacturing and...
-
Think about (or visit if safe to do so) your favourite shopping centre, analyze the tenant mix and answer the following questions. 1. What shopping centre did you visit? 2. Do the tenants appear to...
-
How does the Basel III framework impact a bank's capital requirements and risk-weighted assets, and what are the implications for a bank's ability to engage in lending and investment activities ?
-
A person wants to board a train but reaches the starting line 8 s after it started. The train starting from rest accelerates uniformly at 3 m / s2. What must be the speed of the person to be able to...
-
Fill in each blank so that the resulting statement is true. A solution to a system of linear equations in two variables is an ordered pair that__________ .
-
What are the two primary methods of setting prices?
-
Harper Company uses a voucher system for cash payments. Jonathan Bartell, the bookkeeper, receives and verifies the invoices. He then prepares the voucher and enters the voucher in the voucher...
-
Explain the relationship between safety stock and just-in-time inventory systems.
Study smarter with the SolutionInn App