A solid plastic ball hits a stationary tennis ball in a perfectly elastic collision. If the mass of the plastic ball is three times that of the tennis ball, which statement is true?

A roller coaster is entering a vertical loop which has a radius of 25.0 m. If the coaster is traveling at 45.0 m/s as it enters the loop, how much is the centripetal force that you experience? (Assume your mass to be 75.

Joel has a mass of 50kg he is spending his firs day on skis. His friend is trying to push him across a level patch of snow. Joel friend is pushing with 60N of force but Joel does not move why?

A car rolls along a surface with a coefficient of friction of. 795 I f the car has a mass of 905 kg, what force is needed to accelerate the car from rest to 102.5 km/hr in 10 sec?

Which has the least potential energy

What three assumptions about particles in a gas are made by the kinetic theory?

A body moving with an initial velocity of 30m/s accelerates uniformly at the rate of 10m/s. what is the distance covered during the period

Formation of a precipitate is usually evidence of? the separation of a mixture, a chemical change, formation of a mixture, physical change

Two friends are standing on opposite ends of a canoe that is initially at rest with respect to a frictionless lake. The person in the front throws a very massive ball toward the back, and the person in the back catches it.

How does the role of blood protect the body

use the drop down means to classify the elements as alkali metals alkaline eather metals or transition metals