1. If a projectile is fired straight up at a speed of 30 m/s, the total time to return to its starting point is about * 5 points
3 seconds.
6 seconds.
30 seconds.
60 seconds.
not enough information to estimate

2. Use the appropriate Kinematic Equations to answer the following question: While entering a freeway, a car accelerates from rest at a rate of 2.5 m/s^2 for 12 s. a) How far does the car travel during those 12 s? b) What is the car's final velocity?

3.What is the acceleration of a the BMW i8 Roadster that goes from 0 to 60 mph in 3.8 seconds? a) in mi/h/s and b) in m/s^2

4. You toss a volleyball at 10 m/s straight upward. a) Draw a sketch of the scenario. b) How long will it take to reach zero speed at the top of its path? c) How long will it take to return to its starting point. d) How fast will it be going when it returns to its starting point.

5. What is the hang time of a person who can jump a vertical distance of 0.86 m?

I REALLY NEED HELP

Aforklift raises a 1,020 n crate 3.50 m up to a shelf. how much work is done by the forklift on the crate? the forklift does j of work on the crate.

Aball is thrown upward. at a height of 10 meters above the ground, the ball has a potential energy of 50 joules (with the potential energy equal to zero at ground level) and is moving upward with a kinetic energy of 50 joules. what is the maximum height h reached by the ball? consider air friction to be negligible. 1. h ≈ 10 m 2. h ≈ 50 m 3. h ≈ 30 m 4. h ≈ 40 m 5. h ≈ 20 m 003 10.0 points which of the two object shown below has the greatest kinetic energy? a m b 1 2 m v 2v 1. kinetic energies are the same. 2. a 3. b 4. unable to determine. 004 10.0 points tim, with mass 74.6 kg, climbs a gymnasium rope a distance of 3.1 m. the acceleration of gravity is 9.8 m/s 2 . how much potential energy does tim gain? answer in units of j. 005 10.0 points a car is moving at 64 miles per hour. the kinetic energy of that car is 5 × 105 j. how much energy does the same car have when it moves at 111 miles per hour? answer in units of j. 006 10.0 points an 102 kg man climbs up a 1 m high flight of stairs. the acceleration of gravity is 9.81 m/s 2 . w

Ablock having mass m slides down an inclined plane. the force of friction between the block and the inclined plane is f, the block's weight is m g, and the normal force is n. (a) draw a free – body force diagram showing the forces acting on the block. (b) write down all relevant newton’s equations for a given situation.