A rock rolls down a steep hill. it's initial velocity is 1 meter per second. by the time it reaches the bottom of the hill 30 seconds later, it's velocity is 7 meters per second. what is the acceleration of the rock?

A 10.3 g wire has a density of 10.7 g/cm3 and a resistivity of 6.9 * 10-8 Ω · m. The wire has a resistance of 59 Ω. How long is the wire?

Which is not a nonverbal cue?

Calculate the impulse of a 0.140 kg baseball that starts at rest on a tee and reaches a final velocity of 20 m/s after being struck with a force of 100 N.

Two objects attract each other with a gravitational force of 50 newtons from a given distance. If the distance between the two objects is increased by 5 times, what will be the changed force of attraction between them? A. 2 newtons B. 10 newtons C.

Besides storage, what does a vacuole provide in a plant cell?

Like the polar bear, the walrus is a strong swimmer, although it does not have the same endurance. For short periods of time, a walrus can swim at an average speed of 9.7 m/s. How far would a walrus swim at this speed in 3.4 minutes?

How did Einstein's and Newton's theories differ in terms of explaining the cause of gravity?

A sled being dragged to the right across loosely packed snow with a rightward acceleration

Imagine two artificial satellites orbiting earth at the same distance. one satellite has a greater mass then the other one which of the following would be true about there motion? 1.

What is energy? (Not the answer from google search.)