Standard Grade Physics

Transport

To find the average speed of a car in a race, the distance it covers and what other quantity is required? 20

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Length of the car

Time to cross the finish line Time to cover the distance

1. Length of the car

2. Time to cross the finish line

3. Time to cover the distance

How would you describe instantaneous speed?

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Speed at one point Speed over a large distance

1. Speed at one point

2. Speed over a large distance

15

Acceleration is defined as the rate at which the speed of a vehicle increases. What is the unit

acceleration?

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m / s m2 / s m / s2 ms2

1. m / s2. m2 / s3. m / s2

4. ms2

20

A car takes 4s to increase its speed from 20m/s to 32m/s. What is the

car’s acceleration?

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0.33 m/s2 3 m/s2 5 m/s2 8 m/s2

1. 0.33 m/s2

2. 3 m/s2

3. 5 m/s2

4. 8 m/s2

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A train accelerates from 8m/s to 16m/s at a rate of 0.5m/s2. What is

the time for this to take place?

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0.03s 0.5s 1.9s 16s

1. 0.03s2. 0.5s3. 1.9s4. 16s

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The speed/time graph for a car accelerating is shown. What is its

acceleration? Speed(m/s)

Time(s)

6

4

2

03 6 9

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0.44 m/s2 0.67 m/s2 1.5 m/s2 2.25 m/s2

1. 0.44 m/s2

2. 0.67 m/s2

3. 1.5 m/s2

4. 2.25 m/s2

What is the distance travelled by the vehicle?

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40m 80m 110m 160m

1. 40m2. 80m3. 110m4. 160m Time(s)

20

10

0

Speed(m/s)

2 5 8

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What is the weight of a 62Kg man on Earth (g=10N/kg)?

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0.16 N 6.2 N 72 N 620 N

1. 0.16 N2. 6.2 N3. 72 N4. 620 N

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What is the gravitational field strength on the moon if a 70kg

astronaut weighs 112N?

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0.63 N/kg 1.6 N/kg 182 N/kg 7840 N/kg

1. 0.63 N/kg 2. 1.6 N/kg 3. 182 N/kg 4. 7840 N/kg

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Which of the following situations would you want to INCREASE

friction?

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Slowing a car down Speed skiing

Swimming Air hockey

1. Slowing a car down

2. Speed skiing3. Swimming4. Air hockey

30

Which of the following describes a method of REDUCING friction?

30

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Rubbing surfaces harder together

Making surfaces rougher

Lubrication

Increasing tread on tyres

1. Rubbing surfaces harder together

2. Making surfaces rougher

3. Lubrication4. Increasing tread

on tyres

What is the unbalanced force acting on the car?

300N 180N30

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120N 180N 300N 480N

1. 120N 2. 180N 3. 300N4. 480N

What is the acceleration of the lorry if it has a mass of 20,000kg?

5000N2500N

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0.125 m/s2 0.25 m/s2 4 m/s2 8 m/s2

1. 0.125 m/s2

2. 0.25 m/s2

3. 4 m/s2

4. 8 m/s2

90

What is the correct equation used to calculate the work done (in Joules)

by a force?

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Energy x Distance Force / Distance

Force x Distance Energy / Distance

1. Energy x Distance2. Force / Distance3. Force x Distance4. Energy / Distance

30

A mother pushes a pram with a force of 150N. How far does she push it if

she uses 1200J of energy?

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0.08m 0.125m 8.0m 12.5m

1. 0.08m2. 0.125m3. 8.0m4. 12.5m

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If a 40kg boy climbs a 12m waterslide, how much gravitational

potential energy does he gain?

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3.0J 33.3J 480J 4800J

1. 3.0J2. 33.3J3. 480J4. 4800J

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A crane does 4000J of work in 20s. What is its power output?

90

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5.0 x 10-3 W 20W 200W 8.0 x 104 W

1. 5.0 x 10-3 W2. 20W3. 200W4. 8.0 x 104 W

What is the main energy change that takes place as a ball rolls down

a hill? 30

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Kinetic to Potential Potential to heat

Kinetic to sound Potential to kinetic

1. Kinetic to Potential

2. Potential to heat

3. Kinetic to sound4. Potential to

kinetic

A stunt car drives off a cliff at a speed of 10m/s. The mass of the car is 1500kg and the cliff is 15m high. What is the kinetic

energy as it hits the ground? 90

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7.5 x 103J 7.5 x 104J 2.25 x 105J 3.0 x 105J

1. 7.5 x 103J2. 7.5 x 104J3. 2.25 x 105J4. 3.0 x 105J

A 55kg boy on a 20kg bike moves at 6m/s when she brakes and comes to rest in 3s. What is the power of the

brakes?

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225J 337.5 1350J 2700J

1. 225J2. 337.53. 1350J4. 2700J

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