P10 Revision

Question 1

What is the equation for momentum?

Answer 1

Momentum = Mass x Velocity

Question 2

What is the equation for weight?

Answer 2

Weight = Mass x Gravitational field strength

Question 3

What is the equation for the force applied to a spring?

Answer 3

Force applied to a spring = Spring constant (N/m) x Extension

Question 4

What is the equation for distance?

Answer 4

Distance = Speed x Time

Question 5

What is the equation for acceleration?

Answer 5

Acceleration = Change in velocity
____________________
Time taken

Question 6

What is the equation for resultant force?

Answer 6

Resultant force = Mass x Acceleration

Question 7

What is the equation for kinetic energy?

Answer 7

Kinetic energy = 1/2 x Mass x (Speed)^2

Question 8

What is the equation for stopping distance?

Answer 8

Stopping distance = Thinking time + Braking time

Question 9

What is acceleration?

Answer 9

The acceleration of an object is a measure of how quickly its velocity changes

Question 10

What is speed?

Answer 10

Speed is the time rate at which an object’s position changes

Question 11

What is the equation for force?

Answer 11

Force = Mass x Acceleration

Question 12

What is weight?

Answer 12

The weight of an object is the force of gravity on it

Question 13

What is mass?

Answer 13

The mass of an object is the quantity of matter on it

Question 14

What is velocity?

Answer 14

The velocity of an object is its speed in a particular direction

Question 15

What is momentum?

Answer 15

Momentum is a measurement of mass in motion

Question 16

What is the equation for Newton’s 2nd Law?

Answer 16

Resultant force = Mass x Acceleration

Question 17

What is Hooke’s Law?

Answer 17

The force applied to an elastic object is directly proportional to its extension

Question 18

How do you calculate distance travelled on a graph (straight line)?

Answer 18

Find the area under the line

Question 19

How do you calculate the distance on a graph (curved line)?

Answer 19

Find the number of squares under the curve

Question 20

What affects the braking distance?

Answer 20

• mass and speed of vehicle (increases vehicle’s kinetic energy, which has to reach 0 for it to stop)
• state of vehicle brakes (worn out/faulty brakes won’t be able to apply as much pressure to the wheel to stop the vehicle quickly)
• state of road (icy or wet roads means less friction between the tyres and the road, causng the vehicle to travel further)

Question 21

What affects the thinking distance?

Answer 21

• speed of vehicle (the faster the vehicle is travelling, the further it goes)
• reaction time (tired, drunk, drugs, distracted will increase reaction time)

Question 22

What is braking distance?

Answer 22

Distance taken to stop under the braking force

Question 23

What is thinking time?

Answer 23

How far the vehicle travels during the driver’s reaction time

Question 24

What is the equation for energy in stopping distance?

Answer 24

Energy = Force x Distance

Question 25

Acceleration is directly propotrional to…

Answer 25

the resultant force acting on it (as the force increases, the acceleration increases)

Question 26

What are inelastic collisions?

Answer 26

Objects stick together after collision, kinetic energy is not conserved

Question 27

What are elastic collisions?

Answer 27

Objects separate after collision, kinetic energy is conserved

Question 28

What is compression?

Answer 28

Two pushing forces acting on an object

Question 29

What is tension?

Answer 29

Two pulling forces acting on an object

Question 30

What is terminal velocity?

Answer 30

When the force acting on the object is equal to its weight (resultant force is zero, therefore acceleration is zero)