Transcript The instrument used to measure the temperature of a human

20%
20%
20%
4
20%
3
The kinetic energy of a car travelling along a level
road depends on
20%
5
2
1
1. the distance the car travels
2. the frictional forces acting
on the car
3. the mass of the car only
4. the speed of the car only
5. the mass and speed of the
car
20%
20%
20%
5
2
Speed
(m/s)
8
4
10
8
4
1
1
2
3
4
5
Mass
(kg)
45
45
50
50
50
20%
4
20%
3
Which row of values would result in the
greatest kinetic energy?
A 20 N weight is hung on a spring balance. The
spring extends by 0.10 m. The weight is removed
and a bag of potatoes is hung on the balance. The
spring extends by 0.15 m.
What is the weight of the bag of potatoes?
N
20%
50
N
20%
30
N
20%
20
N
20%
15
10 newtons
15 newtons
20 newtons
30 newtons
50 newtons
10
1.
2.
3.
4.
5.
N
20%
Mass
20%
20%
20%
20%
4
Engine force
3
A car designer wants to increase the maximum
acceleration of a car.
Which entry shows what should be done to the
engine force and the mass of the car?
20%
3 increase
keep the same
4 decrease
increase
5 decrease
keep the same
5
decrease
2
2 increase
1
1 keep the same increase
joule
watt
2 joule
joule
watt
3 newton
watt
joule
4 watt
newton
watt
5 joule
watt
newton
20%
20%
20%
20%
5
1 newton
20%
4
Power
3
Energy
1
Work done
2
Which row gives the correct units for work
done, energy and power?
A newton balance is used to measure
20% 20% 20% 20% 20%
en
tic
ki
ne
w
er
po
er
gy
pe
gr
av
fo
rc
e
di
st
an
ce
1. distance
2. force
3. gravitational
potential energy
4. kinetic energy
5. power
4N
20%
20%
20%
20%
8N
4N
4N
4.
8N
8N
4N
4N
8N
4N
8N
5
3.
2
8N
4N
2.
5.
20%
4
8N
1
1.
3
The diagrams below show the forces acting on a
number of moving objects. Which object is moving
at constant speed?
The kinetic energy of a car travelling along a level
road depends on
20% 20% 20% 20% 20%
1. the distance the car travels
2. the frictional forces acting
on the car
3. the mass of the car only
4. the speed of the car only
5. the mass and speed of the
car
20%
1. A…
20%
20%
20%
20%