Acar with a mass of 1250kg has an initial velocity of 21m/s. after 5.5s, it has a velocity of 43m/s.
a) what was its initial momentum?
b) what is its final momentum?
c) what is its change in momentum?
d) what is the magnitude of the force the car’s engine exerts?
e) what is the impulse for this problem?

Select all the correct answers. which changes will increase the rate of reaction during combustion? decreasing the area of contact between the reactants adding more oxygen to the reaction removing heat from the reaction changing the reactants from solid form to powdered form lowering the exposure of the reactants to air

Adisk with a radius of r is oriented with its normal unit vector at an angle q with respect to a uniform electric field. which of the following would result in an increase in the electric flux through the disk? check all that apply? a. increasing the area of the disk b. decreasing the given orientation angle of the disk c. decreasing the strength of the electric field d. increasing the given orientation angle of the disk, but not exceeding an angle of 90

Provides most of the energy used in the world today. question 4 options: wind fossil fuel moving water sunlight