A model rocket rises from rest with a constant acceleration of 110m/s^2. What is the rocket’s speed at a height of 7.0m? 45.1 m/s
26.0 m/s
39.2 m/s
50.6 m/s

Find the momentum for a 2.6-kg brick parachuting straight downward at a constant speed of 8.4 m/s .

The electric potential v is constant everywhere within a certain region of space. which statement below is true? the choices are: the electric field is also constant (but not zero) within the region. a charged particle placed within the region will experience an electric force. the electric field is zero everywhere within the region. the electric field varies from place to place within the region.

The protons in a nucleus are approximately 2 ✕ 10^−15 m apart. consider the case where the protons are a distance d = 1.93 ✕ 10^−15 m apart. calculate the magnitude of the electric force (in n) between two protons at this distance.