Compare the momentum of a 6,300-kg elephant walking 0.11m/s and a 50 kg dolphine swimming 10.4m/s

What is the length x of the side of the triangle below? (hint: use the cosine function)

A2000 kg car is rounding a curve of radius 200 m on a level road. the maximum frictional force the road can exert on the tires of the car is 4000 n. what is the highest speed at which the car can round the curve?

If we compare the force of gravity to strong nuclear force, we could conclude that