A toy car with a mass of 276 g starts going up a hill at a speed of 5.9 m/s. Assume conservation of energy. If the hill is 800 cm, will the car reach the top? If it doesn't, then how far up will it get? SHOW WORK.

If the speed of a particle triples ,by what factor does its kinetic energy increase?

Initially, a particle is moving at 5.33 m/s at an angle of 37.9° above the horizontal. two seconds later, its velocity is 6.11 m/s at an angle of 54.2° below the horizontal. what was the particle's average acceleration during these 2.00 seconds in the x-direction (enter first) and the y-direction?

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?