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Worksheets3.13 Science Review
Total questions: 18
Worksheet time: 18mins
An object has a mass of 42kg and an acceleration of 14.8m/s^2. What is the force caused by it? (Force= mass times acceleration)
600N
621.6N
670.5N
42kg
An object has an initial velocity of 0m/s and a final velocity of 11m/s. It made the increase in 10s. What is the acceleration? (acceleration=change in velocity divided by time)
11m/s
10s
12m/s
If the arrows on a free body diagram are not the same, the forces are:
balanced
Newtons
unbalanced
strong
If an object is acted on by an unbalanced force it will:
accelerate
crash
stay still
inertia
When an object moves, stops moving, changes speed, or changes direction, scientists describe that condition as:
unbalanced forces
correct
balanced
force
An object is seen to either speed up, slow down, or chage direction due to:
inertia
Newton's Laws
unbalanced forces
being yeeted
A window washer or tightrope walker who does NOT want to change their position wants the forces acting on them to be:
balanced
unbalanced
fast
strong
The universal force that exists between any objects with mass, and is the force that every mass exerts on every other mass:
inertia
electricity
gravity
liquid
Kepler's investigations of the movement of the planets explained that:
Earth is not the center of the universe
Forces are balanced
Unbalanced force
Inertia
In the formation of the solar system, __________ pulled particles of gas and dust together to form planets.
Earth
The Sun
space
gravity
What is Newton's Second Law?
When an object experiences a net force, it will accelerate at a rate determined by its mass
Inertia
Unbalanced Forces
When an object accelerates, it will speed up
According to Newton's 2nd law, when the net force on an object decreases, the acceleration:
also decreases
increases
is the same
is gravity
When a bat hits a ball, the impulse is:
inertia
the force multiplied by the time the objects are in contact
mass times acceleration
velocity divided by time
When a force is applied to an object for an amount of time it is known as:
force
inertia
baseball
impulse
A baseball starts with a speed of 30m/s, and has a final velocity of -40m/s. What is the change in velocity? |-40-30|=___
70m/s
40m/s
30m/s
10m/s
A baseball has a starting velocity of 20m/s and it is hit with a final velocity of -30m/s. What is the change in velocity? |-30-20|= ______
20m/s
50m/s
30m/s
10m/s
In an elastic collision:
energy is lost as heat
kinetic energy is lost as light
there is no loss of kinetic energy in the collision
the energy is lost in space
A collision where energy is lost as sound, heat, etc. is known as:
inelastic
elastic
force
explosion
