A man is on a 30m cliff and throws a ball down with a speed of 7m/s. With what velocity does the ball hit the ground?

According to newton’s first law of motion, which force is expected to cause a body to accelerate?

Using a wheel and axle, a farmer is trying to lift a bucket of water from the bottom of a well. the larger wheel has a radius of 40 cm compared to the axle that has a radius of 10 cm. if a bucket of water is 50 n, then how much effort is required to raise it? 12.5 n 200 n 2 n 500 n

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration