Chapter 2 Mock

Question 1

What is a scalar quantity

Answer 1

Is a quantity that just has magnitude- size but no specific direction

Question 2

What is a vector quantity

Answer 2

A quantity that has both magnitude (size) and a specific direction

Question 3

Examples of scalar quantities

4

Answer 3

Speed
Mass
Energy
Area

Question 4

Examples of vector quantities

5

Answer 4

Displacement 
Velocity 
Acceleration 
Momentum
Force

Question 5

What is velocity

Answer 5

Speed in a stated direction

Question 6

Formula for distance

Answer 6

D

S T

Question 7

Equation for acceleration

Answer 7

(V-u)

T

Question 8

How are Light gates used

Answer 8

A piece of card is attached to car and the light gate is attached to a laptop, the time is measured for how long It takes for Card to pass through light gate. The distance is the Length of the card.

Question 9

Typical walking speed

Answer 9

1.4m/s

Question 10

Typical speed for wind

Answer 10

4.2m/s

Question 11

Average speed of sound

Answer 11

340m/s

Question 12

Average speed for cycling

Answer 12

15.5km/h

Question 13

What is the acceleration in free fall

Answer 13

10m/s2

Question 14

What is Newton’s first law

Answer 14

An object in motion will remain in motion and a stationary object remains stationary unless acted upon by an unbalanced force

Question 15

What is Newton’s second law

Answer 15

An objects acceleration depends on the strength of the unbalanced force acting on it and the mass of The object

Question 16

Formula for force

Answer 16

F

M A

Question 17

What’s Newton’s third law

Answer 17

For every action there is an opposite and opposing reaction.

Question 18

How is weight measured

Answer 18

Newton’s

Question 19

Formula for weight

Answer 19

W

M G

Question 20

Describe relationship between the weight of a body and the gravitational field strength

Answer 20

Weight is a result of gravity. The gravitational field strength of earth is 10 n/kg
(Newton’s per kilogram)

Question 21

What is an object moving in a circular orbit at a constant speed doing

Answer 21

Changing velocity

Question 22

For motion in a circle what does there need to be for it to continue this shape

Answer 22

The centripetal force that acts towards the centre of the circle

Question 23

What is inertial mass

Or known as the ratio of force over acceleration

Answer 23

A measure of how difficult it is to change the velocity of an object (including from rest)

Question 24

What is conservation of momentum in collisions

Answer 24

The momentum before a collision is the same after

Question 25

Formula for momentum

Answer 25

P | M V

Question 26

Name the 3 types of collisions and what they do

Answer 26

Elastic- kinetic energy is conserved Inelastic- kinetic energy is not conserved Completely inelastic- kinetic energy is not conserved and the colliding objects stick together after collision

Question 27

Method of measuring human reaction times

Answer 27

Drop a ruler at any point in time, another person will catch it and you use that distance and the time from stopwatch to calculate speed

Question 28

What is stopping distance a sum of

Answer 28

Thinking distance and braking distance

Question 29

How does mass of vehicle effect stopping distance?

Answer 29

Braking distance increases as mass increases

Question 30

How does speed of vehicle effect stopping distance?

Answer 30

Stopping distance is further for faster speeds

Question 31

How does the drivers reaction time effect stopping distance?

Answer 31

The more alert the driver is of the road and driving the smaller the stopping distance If a driver was tired or under the influence or alcohol or drugs the stopping distance will be increased

Question 32

How does state of the vehicles brakes effect stopping distance?

Answer 32

Bad tyres reduce friction with road which creates a slippery and more dangerous surface

Question 33

How does state of road effect stopping distance?

Answer 33

Icey and wet roads will increase stopping distance considerably

Question 34

How does a large deceleration cause dangers

Answer 34

When a object abruptly stops the person inside won't and will carry on moving forward and can be injured

Question 35

How to find out displacement

Answer 35

Measure From start point to end point with a direction