Which event is an example of a contact force?

A baseball has a mass of 0.145 kilograms. If the acceleration due to gravity is 9.8 m/s2, what is the weight of the baseball in newtons?

The expected life of most lead-acid batteries is

Find the Cartesian components of force PP acting in the x, y, and z directions given P=50.0 NP=50.0 N, α=143.5∘α=143.5∘, β = 70.0∘β = 70.0∘, and γ=60.9∘γ=60.9∘.

A 1776 kg car has a speed of 10.3 m/s when it hits a tree. the tree doesn't move and the car comes to rest. find the change in kinetic energy of the car. answer in units of j.

In the lab, you did not include friction in your calculations for the acceleration. Explain why it was not necessary. What would your equation for acceleration look like if you were to include friction

How much heat is absorbed by a 61g iron skillet when its temperature rises from 5oC to 29oC?

Explain the relationship between motion and frame of reference.

Two students are looking at a brightly lit full Moon, illuminated by the reflected light from the Sun. Consider thefollowing discussion between the two students about what the spectrum of moonlight would look like.

When performing a battery load test, what should the load be set to?

If you push on a wall of a building what will happen