Is work being done when a hiker puts on a bag

The tortoise and the hare are having a race. Both start at rest and have the same constant acceleration, but the hare maintains this acceleration for twice as much time as the tortoise before reaching her top speed.

A body is moving vertically upwards. It's velocity changes at a constant rate from 50m/s to 20m/s in 3 sec. What is it's acceleration?

What type of wave transfer sound

How are magnet'so magnetic force and magnetic field different

If you move a substance from one container to a Nother and its volume changes the substance is a

An apple drops from a tree and hits the ground in 1.5s what is its speed just before it hits the ground?

Sound travels slow in cold air. Why does the speed of sound depend on air temperature?

A tow truck pulls a 500 kg car so that the car accelerates 2 m/s2. What is the net force on the car? 250 N 498 N 1000 N 502 N

Which force keeps you near earths surface?

Name one process that requires a force in the human body.