AQA GCSE Physics Unit 2.3

Description

Twenty questions on the third section of Unit 2 of AQA GCSE Physics: Work and energy.
Matthew T
Quiz by Matthew T, updated more than 1 year ago
Matthew T
Created by Matthew T almost 10 years ago
803
32

Resource summary

Question 1

Question
True or false? Work is done when an object is moved by a force.
Answer
  • True
  • False

Question 2

Question
True or false? Work uses a different SI unit to energy.
Answer
  • True
  • False

Question 3

Question
Into which form of energy does most energy become when work is done to overcome friction?
Answer
  • Thermal
  • Electric
  • Sound

Question 4

Question
True or false? Gravitational potential energy is energy stored in an object because of its position in the Earth's gravitational field.
Answer
  • True
  • False

Question 5

Question
What is the gravitational potential energy of an object of 0.5kg mass if it is lifted by 3m?
Answer
  • 1.5J
  • 3J
  • 15J
  • 10.5J

Question 6

Question
What is the power developed of an object which, when lifted, gains 60J in 10s?
Answer
  • 600W
  • 6W
  • 60W

Question 7

Question
True or false? Kinetic energy is the energy of an object when it is stationary.
Answer
  • True
  • False

Question 8

Question
Which of these is the correct formula for kinetic energy?
Answer
  • KE = 1/2 * m * v
  • KE = m * v
  • KE = 1/2 * m^2 * v
  • KE = m^2 * v
  • KE = 1/2 * m * v^2
  • KE = m * v^2

Question 9

Question
True or false? A system that stores energy when a vehicle brakes is known as a kinetic energy recovery system.
Answer
  • True
  • False

Question 10

Question
True or false? Momentum is a scalar quantity.
Answer
  • True
  • False

Question 11

Question
Which of these formulae is correct for calculating momentum?
Answer
  • p = m * v
  • p = m * v^2
  • p = m^2 * v
  • p = 2m * v
  • p = m * 2v

Question 12

Question
True or false? In a closed system, the total momentum before an event is equal to the total momentum after the event.
Answer
  • True
  • False

Question 13

Question
Trolley A, 6kg, is travelling in one direction at 4m/s. Trolley B, 7kg, is travelling in the other direction at 3m/s. The two trolleys stick together and move off. What is the velocity of the two trolleys?
Answer
  • 2.5m/s
  • 3m/s
  • 3.5m/s
  • 4m/s

Question 14

Question
True or false? In an explosion, the total momentum is zero.
Answer
  • True
  • False

Question 15

Question
True or false? If, in an explosion, two pieces of debris move apart, they will not move with equal and opposite momentum.
Answer
  • True
  • False

Question 16

Question
True or false? A front-end collision increases the momentum of the car.
Answer
  • True
  • False

Question 17

Question
What does a g-force of 2g mean?
Answer
  • The force applied on an object is half its weight
  • The force applied on an object is twice the gravitational field strength
  • The force applied on an object is twice its weight

Question 18

Question
True or false? If the impact time is increased, the impact force will be increased.
Answer
  • True
  • False

Question 19

Question
Which two of these features of car safety are compulsory by UK law?
Answer
  • Seat belts
  • Crumple zones
  • Collapsible steering wheels
  • Airbags
  • Side impact bars

Question 20

Question
True or false? Child car seats are mandatory in the UK for children younger than 12 years old or shorter than 1.35m.
Answer
  • True
  • False
Show full summary Hide full summary

Similar

GCSE AQA Physics - Unit 3
James Jolliffe
GCSE AQA Physics 1 Energy & Efficiency
Lilac Potato
P2 Radioactivity and Stars
dfreeman
P2a revision (part 1)
juliasutton
P2a (part 2)
juliasutton
P3 Medical Applications of Physics
dfreeman
AQA Physics P1 Quiz
Bella Statham
AQA Physics 3 - Medical Applications of Physics
10jgorman
AQA GCSE Physics Unit 2.2
Matthew T
AQA GCSE Physics Unit 2.1
Matthew T