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1. A force with a magnitude of 43.0 N and directed at an angle of 33.0°...

1. A force with a magnitude of 43.0 N and directed at an angle of 33.0° above the horizontal is used to move a 34.0-kg crate along a horizontal surface at constant velocity. How much work is done by this force in moving the crate a distance of 17.0m?

2.How much joules of energy is needed to change the speed of a 1,600 kg sport utility vehicle from 10.0 m/s to 40.0 m/s?

3.70.0 J of work is needed to stretch a spring from 2.00 m to 3.30 m from equilibrium. What is the value of the spring constant in SI unit?

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