From rest, a runner is able to accelerate at 6.0 m/s² and reach the finish line after 30 seconds. What is the speed of the runner at the finish line?

You go watch your friend as she runs at a cross country meet. The first time she passes you, your friend runs by going due north at a speed of 4.40 m/s. You move to a different place on the course and twelve minutes after you saw her the first time, your friend runs past you again. This time she is traveling at a speed of 3.80 m/s in the direction 30.0◦ W of S. What is the direction of her average acceleration between those same two times?

A baseball player throws a ball straight up into the air. At a height of 4.7 m above the release point, the ball is moving at 1.5 m/s. What was the ball's initial speed in m/s? assume g 9.8m/s?.

You shoot a ball straight up with an initial speed of 8490 m/s. When the surface of the earth, what is the speed of the ball? O 2146 m/s reaches a height of 4.0 x 10 6 m above O 2956 m/s O 3546 m/s 4009 m/s 4588 m/s O 4876 m/s

A child throws a stone downward from the top of a cliff with a speed of 4m/s. You notice that it took 2 seconds for the stone to hit the ground. What is the height of the cliff? (Start with a function for the acceleration using g ≈ 9.8m/s2 .

A car is accelerating uniformly as it passes two checkpoints 500 m apart. The car was travelling at 30kph when it passed the first checkpoint. It took the car 10 seconds to reach the secondcheckpoint. What was the car’s acceleration in m/s^2? What was the car’s speed in kph as itpassed the second checkpoint?

Neglecting air resistance, what is the speed (in m/s) of an object just before striking the ground if it was dropped at rest and fell for 4.4 seconds? Your Answer:

A 20 N stone is thrown vertically upward from the ground. It is observed that, when it is 15 m above the ground, it travels with a velocity of 25 m / s upwards. What will its speed be when it is thrown? A) 30.31 m/sB) 15.16 m/sC) 18.19 m/sD) 319 m/s

A 0.26-kg rock is thrown vertically upward from the top of a cliff that is 31m high. When it hits the ground at the base of the cliff, the rock has a speed of 33 m/s.A) Assuming that air resistance can be ignored, find the initial speed of the rock. Answer is 22 m/sB)Find the greatest height of the rock as measured from the base of the cliff.

You want to visit your friend in Seattle and decide to take the train. Unfortunately, you are late getting to the train station. You are running as fast as you can, but 30 meters ahead of you the train begins to pull out. You can run at a maximum speed of 8 m/s and the train is accelerating at 1 m/s². In 50 meters you will reach a barrier. Can you catch up to the departing train? Argue why you should or should not jump onto the moving train?