5.3 linear motion Flashcards

(32 cards)

1
Q

5 forces acting on a performer during linear motion

A

Gravity
Frictional force
Air resistance
Internal muscular force
Weight

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

describe the force of gravity/ weight

A

a downwards acting force. weight is gravitational force that earth exerts on the body

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

describe frictional force

A

the force that resists motion when the surface of one object comes into contact with the surface of another

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

describe air resistance

A

a force which opposes the motion of a body moving through air

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

describe internal muscular force

A

force applied by contraction of muscles in body

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Define weight

A

the gravitational force that earth exerts on the body

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

define velocity

A

the rate of change of displacement

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

define displacement

A

the shortest route between starting and finishing point

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

define acceleration

A

the rate of change of velocity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

define momentum

A

the quantity of motion of a body

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

equation for weight

A

mass x acceleration due to gravity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

equation for velocity

A

displacement/ time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

equation for displacement

A

measuring straight line between two points

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

equation for acceleration

A

(final velocity- initial velocity)/time taken

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

equation for momentum

A

mass x velocity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

units of weight

17
Q

units for velocity

18
Q

units for displacement

19
Q

units for acceleration

20
Q

units for momentum

21
Q

5 vector measures

A

weight, velocity, displacement, acceleration, momentum

22
Q

3 scalar quantities

A

mass, speed, distance

23
Q

define speed

A

distance covered by a moving object in a unit time taken

24
Q

define distance

A

length of space between two points

25
define mass
the quantity of matter a body possesses
26
equation for speed
distance/ time
27
equation for distance
speed x time
28
equation for mass
density x volume
29
units for speed
m/s
30
units for distance
m (meters)
31
units for mass
Kg
32
what is impulse
the effect of a force acting over a period of time