Physics 1

Kinematic Equation: Quantitative description of motion

Objective To solve problems involving kinematic quantities using kinematic equations. "Solve the following problems. Show your solutions. 1. Albert is riding his scooter at a velocity of 80 km/h, when he sees an old woman crossing the road 45m away. He immediately steps hard on the brakes to get the maximum deceleration of 7.5 m/s2. How far will he go before stopping? Will he hit the old woman? Note: Show conversion of units. Use the back page Given: V, = VI= a = unknown: Solution: 2. A train accelerates from 30 km/h to 45km/h in 15.0s. Find its (a) acceleration and (b) the distance it travels during this time. Given: Vi = V1 = t = unknown: Solution: 3. A driver traveling at 70km/h tries to stop the car and finds that the brakes have failed. The emergency brake is then pulled and the car comes to a stop in 120m. Find the car's acceleration. Given: V. = d unknown: Solution:running. 4. Measure and record the distances that the individual covered in each trials. Find the average Distance (m) Total (m) Average Speed Name (m/s) First Trial Second Trial IV. Guide Questions (This should be done individually.) 1. Compare the distance you covered in the first trial and in the second trial. 2. What is your average speed? 3. Who is the fastest and the slowest? 4. What do you think are the factors that affected your speed? Enumerate at least 3 V. Conclusion