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Q 1/27
Score 0
A 50 g hockey puck is sliding across the ice. A player exerts a constant 3.75 N of force over a distance of 0.125 m. How much work does the player do on the puck?
30
0.03 N M
3.75 N M
0.469 N M
30 N M
Q 2/27
Score 0
What is the change in a hockey puck's energy when a force of 3.75 N acts over a distance of 0.125 m on the puck?
30
1 J
4.69 J
0.469 J
30 J
27 questions
Q.
A 50 g hockey puck is sliding across the ice. A player exerts a constant 3.75 N of force over a distance of 0.125 m. How much work does the player do on the puck?
1
30 sec
Q.
What is the change in a hockey puck's energy when a force of 3.75 N acts over a distance of 0.125 m on the puck?
2
30 sec
Q.
The mass of an object was 456 g. It was moving towards the sign at 67 m/sec. What is the kinetic energy of the object?
3
30 sec
Q.
Tangy pushes a 34 kg mass 14 m across the pavement with a horizontal force of 78 N. Calculate the amount of work done by Tangy.
4
30 sec
Q.
If Sally has amass of 20 kg and climbs up a 22 m wall in 7 seconds, what is the average power Sally is exerting ?
5
30 sec
Q.
If Mark is driving a 2000 kg truck at 20 m/sec, how much kinetic energy is being produced ?
6
30 sec
Q.
A hockey puck with a mass of 24 grams travels across the ice at a speed of 12 m/sec. What is the kinetic energy of the puck?
7
30 sec
Q.
A 15 g tennis ball is rolling across a road. A person exerts a constant force of 4.05 N over a distance of 0.24 m to get it back in the yard. How much work does the person do on the puck ?
8
30 sec
Q.
Samwise pushes a wheelbarrow through his garden 5 meters in 10 seconds by exerting a force of 500 N. What power does Samwise produce?
9
30 sec
Q.
At the dinner table, Frodo slides a plate across the table with a force of 15 N over a distance of 0.1 Meters. How much work will Frodo do on the plate ?
10
30 sec
Q.
The equation for work (W = F x d) can only be held for constant forces exerted in the direction of what?
11
30 sec
Q.
Power is the rate at which the ________ force changes the energy of the system.
12
30 sec
Q.
The kinetic energy of an object is equal to ______ times the mass of the object multiplied by the speed of the object.
13
30 sec
Q.
Billy does 22019 J of work on a ball. The work is performed over 5 seconds. What is Billy's power?
14
30 sec
Q.
What is the kinetic energy of a ball with a mass of 0.5 kg and a speed of 2 m/sec ?
15
30 sec
Q.
What is the kinetic energy of an object with a mass of 2 kg and the velocity of 3 m/sec ?
16
30 sec
Q.
About how much force did John do pulling a sled if he pulled it 10 m at a 30 degree angle with 30 N of force ?
17
30 sec
Q.
Lillian produced 50 J of work in 30 seconds. How much power did she produce ?
18
30 sec
Q.
Jill has a mass of 200 kg and was moving at 2 m/sec. What was her kinetic energy ?
19
30 sec
Q.
A 200 g hockey puck is sliding across the ice. A player exerts a constant 6.25 N force over a distance of 0.3 m for 6 seconds. How much work does the player do on the puck?
20
30 sec
Q.
A small motor lifts a claw in a crane game 0.25 m in 3 seconds by exerting an upward force of 0.1 N. What power does the motor produce in kilowatts ?
21
30 sec
Q.
A 15 kg wagon is rolling down the road at 3 m/sec. What is it's kinetic energy ?
22
30 sec
Q.
A 200 N force is pushing a crate for 20 m . What work is performed ?
23
30 sec
Q.
What is the power exerted when a force of 55 N is exerted for 10 seconds over 33 m ?
24
30 sec
Q.
What is the kinetic energy of a 20 kg ball moving at 3 m/sec ?
25
30 sec
Q.
If a crate weighing 10 N is pushed across a surface for 10 m, what is the work exerted ?
26
30 sec
Q.
If the crate weighing 10 N is pushed 10 m in 10 seconds, what is the power exerted ?
