In a collision between a huge SUV and a small hybrid car, the SUV exerts a larger force on the hybrid than the hybrid exerts on the SUV.
True
False
It depends on whether the collision is a head-on collision or a rear-end collision.
False
A girl attaches a rock to a string, which she then swings counter-clockwise in a horizontal circle. The string breaks at point P in the figure, which shows a bird's-eye view (as seen from above). Which path (A-E) will the rock follow?
Path A
Path B
Path C
PATH B
A satellite is in orbit around the earth. Which one feels the greater force?
It depends on the distance of the satellite from Earth.
the earth because the satellite has so little mass
the satellite because the earth is so much more massive
Earth and the s
Earth and the satellite feel exactly the same force.
A crate is sliding down an inclined ramp at a constant speed of 0.55 m/s. The vector sum of all the forces acting on this crate must point
down the ramp.
vertically downward.
up the ramp.
perpendicular to the ramp.
None of the above choices is correct.
None of the above choices is correct.
You are standing in a moving bus, facing forward, when you suddenly slide forward as the bus comes to an immediate stop. What force caused you to slide forward?
gravity
the force due to friction between you and the floor of the bus
the normal force due to
There is not a force causing you to slide forward
A bucket is being lowered by a very light rope with a constant downward velocity. The tension in the rope must be
less than the weight of the bucket.
equal to the weight of the bucket.
greater than the weight of the bucket.
equal to the weight of the bucket.
An object is moving with constant non-zero velocity. Which of the following statements about it must be true?
A constant force is being applied to it in the direction opposite of motion.
Its acceleration is in the same direction as it velocity.
The net fo
the net force on the object is zero.
When a car goes around a circular curve on a horizontal road at constant speed, what force causes it to follow the circular path?
the normal force from the road
the friction force from the road
gravity
No force causes the car to do this because the car is
the friction force from the road
When a car turns a corner on a level road, which force provides the necessary centripetal acceleration?
tension
gravity
normal force
air resistance
friction
friction
When an object moves in uniform circular motion, the direction of its acceleration is
is directed away from the center of its circular path.
is directed toward the center of its circular path.
in the opposite direction of its velocity vector.
in the same
is directed toward the center of its circular path.
Two children, Ahmed and Jacques, ride on a merry-go-round. Ahmed is at a greater distance from the axis of rotation than Jacques. Which of the following are true statements? (There could be more than one correct choice.)
Check all that apply.
Ahmed has a
Ahmed has a greater tangential speed than Jacques.
Jacques and Ahmed have the same angular speed.
When a rigid object rotates about a fixed axis, what is true about all the points in the object? (There could be more than one correct choice.)
Check all that apply.
They all have the same radial acceleration.
They all have the same angular speed.
They al
They all have the same angular speed.
They all have the same angular acceleration
Which factor does the torque on an object NOT depend on?
the magnitude of the applied force
the angle at which the force is applied
the object's angular velocity
the object's angular velocity
Moment of inertia is __________.
the time at which inertia occurs
the rotational equivalent of mass
the point at which all forces appear to act
The rotational equivalent of mass