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WorksheetsMid Terms Physics Revision ( Year 10 )
Total questions: 25
Worksheet time: 6hrs 15mins
Speed = ____
d/t
s/t
t/d
t/s
Moment= ______
Nm
N/m
m/N
Impulse = _________
Final momentum - initial momentum
Final momentum + initial momentum
Initial momentum - final momentum
Initial momentum + final momentum
Power = ______
Work x time
Work/time
Time/work
Which of the following are formulas for efficiency?
Power output/ power input x 100%
Energy output/ energy input x 100%
Power input/ power output x 100%
Energy input/ energy output x 100%
Momentum = _____
Mass / Velocity
Velocity / Mass
Mass x Velocity
Kinetic Energy = ______
1/2mv^2
1/2mv
mv
mv^2
Which of the following are formulas for work done?
Fd
mgh
1/2mv^2
mg
velocity = ____
d/t
s/t
t/d
t/s
Weight=______
mg
mgh
1/2mgh
mg^2
What does the S.I unit s stand for?
displacement
moment
scalar
acceleration
Take a break.
Press an answer to continue.
I am ready!
I am ready!
Calculate Force (F)
( Answer in N )
(a)
If the force of W is 24N, the see-saw will:
Rotate anti-clockwise
Rotate Clockwise
Remain balanced
A small electric motor is used to lift up 2kg mass at a constant speed. If the mass is lifted a vertical distance of 3 meters in 10 seconds, what is the average power developed by the motor?
( Give answers in W )
(a)
What force must the 680kW engine of 3500kg car exert on the wheels to maintain a speed of 20m/s?
( kW -> W = x 103 )
[ Give answers in N ]
(a)
100J of electric energy is used to turn on a table lamp, calculate the efficiency of the table lamp.
(Give answers in %)
(a)
An electric engine transfers 300J into kinetic energy, 280J into heat energy and 160J into sound energy. Given that heat energy and sound energy are considered wasted energy, find the efficiency of the engine.
(Give answers in % and to the nearest 1dp)
(a)
A 50kg object was moving at 18.2m/s when a 200N force is applied opposite the direction of the objects motion, causing it to slow down to 12.6m/s.
How long was this force applied?
( Give your answers in s and to the nearest 1dp)
(a)
A box weighing 100kg is being pushed at a velocity of 3m/s, calculate the momentum of the box.
(Give your answers in kgm/s)
(a)
Tomathy is lifting a block using a crane 10m above the ground using a force of 200N. Calculate the work done.
(Give answers in J)
(a)
A block with the mass of 50kg is pushed at the velocity of 1.5m/s. Calculate the work done.
(Give answers in J and to the nearest 1dp)
(a)
A crane lifts a 75kg mass the height of 8m. Calculate the gravitational potential energy gained by the mass.
( g=9.8 )
(Give your answers in J)
(a)
A particle is moving in a straight line from O to A with a constant acceleration of 2ms. It's velocity at A is 30ms and it takes 15 seconds to travel from O to A. Find the particle's velocity at O.
(give answer in ms)
(a)
A gas molecule is moving from area A to area B with a constant acceleration of 5ms. It's velocity at B is 65ms and it takes 10 seconds to travel from A to B. Find distance AB.
( Give answers in m and to the nearest 1dp)
(a)
