WorksheetsForces
Total questions: 30
Worksheet time: 33mins
Jonny and Patty are pushing against a basketball. Both of them push against the ball on opposite sides with a force of 20 N to keep the ball still. What is the net force?
400 N
24 N
0 N
40 N
A person stands on a scale in an elevator. If the elevator accelerates upward, what happens to their weight?
Their weight increases.
Their weight stays the same.
Their weight decreases.
Their weight changes to a negative value.
Friction is a contact force that acts _______ to the surfaces in contact.
parallel
perpendicular
equal
at an acute angle
The type of friction that prevents an object from moving is called _______ friction.
rolling
fluid
kinetic
static
What affect would decreasing the normal force between two objects have on the force of friction?
The force of friction would increase.
The force of friction would decrease.
The force of friction would remain the same.
The force of friction would disappear completely.
What is the definition of a force?
a mass acted on by energy
an object's inertia
a push or a pull that acts on an object
something that resists change in motion
What is the magnitude and direction of the force in the free body diagram shown?
35 N right
17 N right
11 N right
5 N right
The tendency of an object to resist change in motion is called
Mass
Equilibrium
Normal force
Inertia
The normal force is always ______________ to the surface
Parallel
Diagonal
Perpendicular
Opposite
A net force of 15 N is exerted on an encyclopedia to cause it to accelerate at a rate of 5 m/s2. Determine the mass of the encyclopedia?
m = 3.0 kg
m = 75 kg
m = 5.0 kg
m = 3.0 g
If a 10 kilogram object accelerates suddenly at 15 m/s2, how much force was applied to the object?
150 newtons
15 newtons
150 kilograms
100 kilograms
If you INCREASE the force applied to a 50 kg crate, what happens to the acceleration of the crate?
acceleration increases
acceleration decreases
force increases
this cannot be determined
A person stands on a scale in an elevator. If the elevator accelerates upward, how does the reading on the scale change?
The scale reading decreases
The scale reading increases
The scale reading doesn't change
The scale reading changes to a negative value
Which of the following free-body diagrams correctly shows the forces acting on an object resting on an incline?
The box being pulled up the frictionless incline at a constant speed has a tension force equivalent to _______.
mg cos θ
mg sin θ
FN
mg
