The net force on a 3.2kg toy airplane is 7N. What is the accelerator of the airplane?

A brick is dropped from the top of a building through the air (friction is present) to the ground below.

Given that the period of the Moon's orbit about the Earth is 27.32 days and the nearly constant distance between the center of the Earth and the center of the Moon is 3.84 108 m, use T2 = 4 π2 GME a3 to calculate the mass of the Earth.

Why do physicists use models?

A 600kg car is at rest, and then accelerates to 5n/s what is the original kinetic energy?

Consider a spring with a force constant of 965 N/m. Suppose the mass of the block is 1.70 kg, but its initial speed can be varied. What initial speed is required to give a maximum spring compression of 3.70 cm.

What two things change when an object is travelling at a constant speed

Two people are standing on a 3.12-m-long platform, one at each end. The platform floats parallel to the ground on a cushion of air, like a hovercraft. The two people, the platform and a 3.36-kg ball are all initially at rest. One person throws the 3.

Compared with falling on a wooden floor, a wine glass may not break when it falls to a carpeted floor because of the

Explain the formation of color in terms of reflection and absorption of light waves.

Stretched 1 cm beyond its natural length, a rubber band exerts a restoring force of magnitude 2 newtons.