How much work must be done by a force on a 100kg body in order to accelerate it from 0 to 20 m/s in 10 seconds?

Physics Practice Questions - ATPL8

Quiz
•
Physics
•
Professional Development
•
Easy
Kabeer Asim
Used 1+ times
FREE Resource
60 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
2 × 10³ J
4 × 10³ J
2 × 10⁴ J
4 × 10⁴ J
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A railway truck with a mass of 10000kg rolling at 5m/s collides with a stationary truck of mass 12500kg. The trucks join together. At what speed do they move after the collision? Note: we shall assume that friction forces are small enough to ignore, so we can apply the law of conservation of momentum.
2.2m/s
3.5m/s
1m/s
Cannot be determined
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
An engine reaches its top speed from rest in 7.5s. It is able to perform 250,000J of work in that time. The power of the engine is _________.
1.8kW
33.3kW
298kW
41kW
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If 150 Joules of work is needed to move a box 10m, what force was used?
1500N
15N
1.5N
150N
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Fahrenheit may be converted to Celsius by using the equation
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The slope of a velocity time graph represents the _________.
Velocity of the object
Displacement of the object
Acceleration of the object
Momentum of the object
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A fluorescent lamp is 25% efficient. Choose the statement that correctly describes how the lamp performs.
25% of the energy supplied to the lamp is lost along the way.
25% of the energy supplied to the lamp is transferred to light.
75% of the energy supplied to the lamp is transferred to light.
The lamp is not working properly.
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