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WorksheetsMomentum, Energy, Work and Power Practice Problems
Total questions: 10
Worksheet time: 3hrs 30mins
A dog is pulling a 15kg boy in a wagon with a horizontal force of 50N. The dog and the boy travel 3.5 m forward in 40 s, they travel at a constant velocity due to friction. How much work was done by the dog pulling?
0 J
339.5 J
514.5J
175 J
A dog is pulling a 15kg boy in a wagon with a horizontal force of 50N. The dog and the boy travel 3.5 m forward in 40 s, they travel at a constant velocity due to friction. How much work was done by friction?
0 J
-339.5 J
-514.5J
-175 J
A dog is pulling a 15kg boy in a wagon with a horizontal force of 50N. The dog and the boy travel 3.5 m forward in 40 s, they travel at a constant velocity due to friction. What is the change in energy?
0 J
339.5 J
514.5J
175 J
A dog is pulling a 15kg boy in a wagon with a horizontal force of 50N. The dog and the boy travel 3.5 m forward in 40 s, they travel at a constant velocity due to friction. How much work was done by gravity?
0 J
339.5 J
514.5J
175 J
A 60 kg box is lifted by a rope a distance of 10 meters straight up at constant speed. How much power is required to complete this task in 5 seconds?
5880 J
1176 W
5880 W
1176 J
A 2200-kg vehicle is traveling at 94 km/h. Determine its momentum.
206,800 Ns
57,444 Ns
206,800 Nm
57,444 Nm
A 0.25 ball is traveling 10 m/s to the right towards a brick wall. The ball rebounds with a speed of 8 m/s. Determine the change in momentum for the ball.
-4.5 Ns
+4.5 Ns
-0.5 Ns
+0.5 Ns
A 1000 kg car is driving at 25 m/s. Determine its kinetic energy.
312,500 J
12,500 J
25,000 J
625,000 J
A man lowers a 30-kg box 5 m. Determine the change in the box's gravitational potential energy
1470 J
-1470 J
150 J
-150 J
A spring with constant of 1500 N/m is stretched 20 cm from its rest position. Determine the energy stored in the spring.
30 J
300,000 J
150 J
15,000 J
