A sprinter has a mass of 80kg and a kinetic energy of 4000 j. What is the sprinter's speed

A 55 kg ice skater is gliding along at 3.5 m/s. Five seconds later her speed has dropped to 2.8m/s. What is the magnitude of the kinetic friction acting on her skates?

What is the net work done on the 20kg block while it moves the 4 meters? A. 240J B. - 200J C. 120J D. 0J

A boy on a bicycle rides at 21.1m/s distance of 87.9m how long does it take

Electric charge can accumulate on an airplane in flight. You may have observed needle-shaped metal extensions on the wing tips and tail of an airplane. Their purpose is to allow charge to leak off before much of it accumulates.

Angela is analyzing the fracture pattern of a window she know it's at the crack stop when they intersect knowing this what can she determine about the window

In your own words describe an interaction between the chromosphere and the hydrosphere

Ming drives across Arizona in the middle of July. She drives for two hours in the hot, desert sun before stopping for some snacks. Which statement describes the condition of the tires on Ming's car when she stops? A.

Why is it harder to get something moving than to keep it moving?

An advertisement for a new fish food claims that lab studies show that fish grew three inches in three weeks while eating the food. Travis wondered if the food was worth the extra cost. To evaluate the claim in the advertisement, Travis should

What will happen to an astronaut when the jets produce these four forces