A car is driving along the highway when its driver sees a traffic jam ahead. The...

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A car is driving along the highway when its driver sees a traffic jam ahead. The driver hits the brakes, causing a uniform acceleration of magnitude 2.0 m/s^2, and reduces the speed of the car to 10.0 m/s over 1.20 s. What was the displacement of the car during the 1.20 s that it was slowing down? (13.4 m) A marble is launched up a ramp with a spring-loaded cannon. 2.0 s after losing contact with the cannon, the marble has traveled 2.3 m up the ramp and has a velocity of 0.8 m/s directed up the ramp. What was the velocity of the marble at the instant it left contact with the cannon? You may assume that the marble had uniform acceleration after leaving the cannon. (1.5m/s) Q1. A ball is launched straight up into the air, where it has a downwards acceleration of magnitude 9.8 m/s^2. The ball has an initial velocity of magnitude 13.4 m/s. How long does it take the ball to reach its maximum height? (1.4s) Q2. (a) How long does it take for a golf ball to fall from rest for a distance of 12.0 m? (b) How far would the ball fall in twice that time? Q3. A 55 kg lead ball is dropped from the leaning tower of Pisa. The tower is 55 m high. (a) How far does the ball fall in the first 3.0 s of flight? (b) What is the speed of the ball after it has traveled 2.5 m downward? (c) What is the speed of the ball 3.0 s after it is released? A car is driving along the highway when its driver sees a traffic jam ahead. The driver hits the brakes, causing a uniform acceleration of magnitude 2.0 m/s^2, and reduces the speed of the car to 10.0 m/s over 1.20 s. What was the displacement of the car during the 1.20 s that it was slowing down? (13.4 m) A marble is launched up a ramp with a spring-loaded cannon. 2.0 s after losing contact with the cannon, the marble has traveled 2.3 m up the ramp and has a velocity of 0.8 m/s directed up the ramp. What was the velocity of the marble at the instant it left contact with the cannon? You may assume that the marble had uniform acceleration after leaving the cannon. (1.5m/s) Q1. A ball is launched straight up into the air, where it has a downwards acceleration of magnitude 9.8 m/s^2. The ball has an initial velocity of magnitude 13.4 m/s. How long does it take the ball to reach its maximum height? (1.4s) Q2. (a) How long does it take for a golf ball to fall from rest for a distance of 12.0 m? (b) How far would the ball fall in twice that time? Q3. A 55 kg lead ball is dropped from the leaning tower of Pisa. The tower is 55 m high. (a) How far does the ball fall in the first 3.0 s of flight? (b) What is the speed of the ball after it has traveled 2.5 m downward? (c) What is the speed of the ball 3.0 s after it is released?

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Q1 Given Initial velocity u 134 textms Acceleration a 98 textms2 negative because acceleration is di... View the full answer