In which of these situations does a roller coaster have the most kinetic energy?

A. climbing up the first hill

B. at the top of the first hill

C. half-way down the first hill

D. at the bottom of the first hill

A truck decelerates at a rate of 2 m/s2. If it starts with a velocity of 15 m/s, how long will it take to stop?

What is the common phrase for natural selection

What is the weight of a 5.00 kg object on Earth? Assume g=9.81 m/s^2.

In a video game, a ball moving at 0.6 meter/second collides with a wall. After the collision, the velocity of the ball changed to - 0.4 meter/second. The collision takes 0.2 seconds to occur.

Which of these would best represent the effect of an embargo on trade with China?

How many excess electrons must be present on each sphere if the magnitude of the force of repulsion between them is 4.57*10-21 newtons?

If you could see the electric field coming off a proton you would notice that electric field lines are

We wrap a light, nonstretching cable around a 10.0 kg kg solid cylinder with diameter of 38.0 cm cm. The cylinder rotates with negligible friction about a stationary horizontal axis. We tie the free end of the cable to a 14.

A 0.5kg baseball experiences a 10N force for a duration of 0.1s. What is the change in velocity of the baseball

A beam of light passes from air into a cube of zirconium if the angle of incidence is 40"what is the angle of refraction?