Four model rockets are launched in a field. The mass of each rocket and the net force acting on it when it launches are given in the table below.

Rocket

Mass (kg)

Force (N)

1

4. 25

120

2

2

3. 25

120

3

5. 50

120

4

4. 50

120

Which rocket has the highest acceleration?

A. Rocket 3

B. Rocket 1

C. Rocket 4

D. Rocket 2

An engineer designs a roller coaster so that a car travels horizontally for 152 ft, then climbs 137 ft at an angle of 34.0° above the horizontal. it then moves 137 ft at an angle of 48.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)

Power can be defined as a. the distance over which work was done. b. how much work can be done in a given time. c. all the work in an given area. d. the energy required to do work.

Suppose an objects initial velocity is 10m/s and it’s final velocity is 4 m/s. mass is constant. what can best be concluded about the object based in the work-energy theorem