PHYSICS TEST QUESTIONS WITH 100%
CORRECT ANSWERS { GRADED A+}
Object A has a small mass. Object B has a large mass. If the same net force is
applied to A and B, which one will accelerate at a greater rate? - ✔✔Object A
What is the effect of friction on a moving object? How is the object able to
maintain a constant speed when friction acts upon it? - ✔✔Friction pushes on a
moving object, creating resistance against the object's motion, and ultimately
slowing it down to a stop. Galileo said that if an object didn't have a force of
friction acting upon it, it would move forever. The object is able to maintain a
constant speed when friction acts upon it because the object has exactly the right
net force to cancel out the friction.
What was the distinction Aristotle made between "natural motion" and "violent
motion"? - ✔✔Natural motion is more up and down, like smoke rising. The
moving object is going to its natural resting place. Violent motion is motion that is
, forced, for example a bowling ball rolling because of force from an arm. Violent
motion is the result of a pulling/pushing force.
State Newton's second law in words, an din the form of an eqaution -
✔✔Acceleration equals net force divided by mass
acceleration = net force / mass
Forces of 10N and 20N in the same direction act on an object. What is the net force
on the object? - ✔✔10N + 20N = 30N
If the forces exerted on an object are 50N in one direction and 30N in the opposite
direction, what is the net force exerted on the object? - ✔✔50N - 30N = 20N
Suppose a cart is being moved by a certain net force. If the net force is doubled, by
how much does its acceleration change? - ✔✔The acceleration is doubled since
net force and acceleration
are directly proportional.
Suppose a cart is being moved by a certain net force. If a load is dumped into the
cart so its mass is doubled, by how much does the acceleration change? - ✔✔The
acceleration is half as much since mass and acceleration
are inversely proportional.
CORRECT ANSWERS { GRADED A+}
Object A has a small mass. Object B has a large mass. If the same net force is
applied to A and B, which one will accelerate at a greater rate? - ✔✔Object A
What is the effect of friction on a moving object? How is the object able to
maintain a constant speed when friction acts upon it? - ✔✔Friction pushes on a
moving object, creating resistance against the object's motion, and ultimately
slowing it down to a stop. Galileo said that if an object didn't have a force of
friction acting upon it, it would move forever. The object is able to maintain a
constant speed when friction acts upon it because the object has exactly the right
net force to cancel out the friction.
What was the distinction Aristotle made between "natural motion" and "violent
motion"? - ✔✔Natural motion is more up and down, like smoke rising. The
moving object is going to its natural resting place. Violent motion is motion that is
, forced, for example a bowling ball rolling because of force from an arm. Violent
motion is the result of a pulling/pushing force.
State Newton's second law in words, an din the form of an eqaution -
✔✔Acceleration equals net force divided by mass
acceleration = net force / mass
Forces of 10N and 20N in the same direction act on an object. What is the net force
on the object? - ✔✔10N + 20N = 30N
If the forces exerted on an object are 50N in one direction and 30N in the opposite
direction, what is the net force exerted on the object? - ✔✔50N - 30N = 20N
Suppose a cart is being moved by a certain net force. If the net force is doubled, by
how much does its acceleration change? - ✔✔The acceleration is doubled since
net force and acceleration
are directly proportional.
Suppose a cart is being moved by a certain net force. If a load is dumped into the
cart so its mass is doubled, by how much does the acceleration change? - ✔✔The
acceleration is half as much since mass and acceleration
are inversely proportional.
