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Worksheetsforces and motion (terms and equations)
Total questions: 20
Worksheet time: 19mins
what is the name given to the single force that is equivalent to all the other forces acting on a given object
resultant force
air resistance
gravity
displacement
Which of newtons law is this?
If the resultant force on a stationary object is zero, the object will remain at rest.
(a)
what is newtons first law on a moving object?
if the resultant force on a moving object is zero, the object will accelerate
if the resultant force on a moving object is zero, the object will stop
if the resultant force on a moving object is zero, the object will remain at a constant velocity
if the resultant force on a moving object is zero, the object will decelerate
State the equation for Newton's second law
(a)
define weight?
The mass of an object
the force that acts on an object due to gravity and the object mass
gravity
Newton
weight = mass x (a) ?
The change of velocity, which can be calculated from the gradient of a velocity-time graph is called...
distance
acceleration
speed
displacement
acceleration= change in velocity divided by what
(a)
what is the resultant force?
300N
500N
200N
800N
The mass of a water skier is 54kg, and at the top of her jump she is 5m above water level. Using this information calculate the gravitational potential energy she gains in rising 5m. (this is all on earth)
270
540
10.8
2700
the size of the resultant force on the car is 350N, which direction is the resultant force is acting?
down
to the left
to the right
up
calculate the weight of a car with a mass of 625 kg
62.5
62500
6250
625
(a) quantities: only have magnitude, not a direction
(a) quantity: that have both magnitude and direction. This is represented by an arrow.
where on this graph is this car accelerating at a constant speed
0-A
A-B
B-C
C-D
when an object is falling what are the 2 main forces acting?
The mass of the object
the weight of the object
air resistance
friction
terminal velocity is when the weight of the object is (a) by the air resistance.
after immediately jumping out of a plane what are the forces acting on the parachutist?
There is no air resistance. There is a resultant force acting downwards.
There is air resistance but the weight increases. There is a resultant force acting downwards.
The objects weight is balanced by the air resistance. There is no resultant force.
The air resistance force is more than the weight. There is a resulting force acting upwards.
Which experiences the greater change in momentum?
Two 0.2kg rubber balls are hit directly towards different walls. Each impacts with the same initial speed of 20m/s. Ball A hits a stone wall and rebounds directly back at a speed of 18m/s. Ball B hits a bulletin board and rebounds directly back at a speed of 10m/s.
(a)
What does the area of a velocity time graph show?
velocity
acceleration
distance travelled
time change
