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WorksheetsWork, Power, Energy
Total questions: 10
Worksheet time: 5mins
What are the units for Work?
Joules (J) or Newton (N)
Joules (J) or Newton.meters (N.m)
Pascal (P) or Newton (N)
Pascal (P) or Joules (J)
When a force (F) is applied to an object and causes the location of the point of application to displace in space (Δd). Therefore, what is the formula for Work?
W = F / Δd
W = F x Δd
W = Δd - F
W = F x distance
A force of 1500 N is applied during the drive off from a sprint start. The centre of mass moves a distance 0.4 m. What work is done?
1200 J
1500 J
3750 J
600 J
Energy is the capacity to do work. There are different forms of energy. What is the example of Potential Energy?
Holding a weight above the head
Speed of sprint runner
Stretching spring weights
Holding a weight below the head
Power is defined as...
the capacity to do work
the location of the point of application to displace in space
no energy change then total mechanical energy remains constant
the rate at which work is being done
= ½ m · v2
describes which type of energy?
potential energy
linear kinetic energy
elastic energy
strain energy
ES = ½ k · Δx2
The above is the formula for Elastic Energy. What is an example of an elastic energy?
holding a weight above the head
speed of sprint runner
stretching spring weights
holding a weight above the head
i.Calculate the potential energy of an athlete of 73kg that is 1.5m above the ground.
3630 J
1074.2 J
1045.4 J
7300 J
A long jumper with a mass of 60 kg approaches the take-off board with a velocity of 11m.s-1. What is their linear kinetic energy?
3630 J
1047.2 J
1045.4 J
3330 J
Will work done be easier or harder for a weight lifter with a shorter stature?
easier
harder
