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WorksheetsGrade 11 Energy and momentum
Total questions: 10
Worksheet time: 11mins
A massive object will always have more momentum than a smaller object.
True
False
An object had a pi of 30kgm/s and ended with a pf of 40 kgm/s. What was the impulse?
2 kg m/s
10 kg m/s
70 kg m/s
5 kg m/s
An object has Pi of 20kgm/s ends up with a Pf of 40kgm/s. How long would a 5N force needed to act?
3s
8s
7s
4s
A 80kg woman skates towards a stationary child of mass 40 kg. She picks the child up. Calculate the new velocity of the woman and child.
3m/s
5m/s
1m/s
4m/s
A force of 10 N is applied at an angle of 60o to the horizontal. If the distance moved by the box is 30m, calculate the work done.
30J
300J
40J
150J
What is the kinetic energy at point C?
200J
100J
300J
20J
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 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 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
The kinetic energy of and object with mass m and speed v is Ek. The mass is now double but the velocity is halved. What is the new kinetic energy of the object?
Ek
Ek/2
Ek/4
2Ek
