Physics 1 Questions with 100% Correct Answers
You are making a circular turn in your car on a horizontal road when you hit a big patch of ice,
causing the force of friction between the tires and the road to become zero. While the car is
on the ice, it
moves along a straight-line path in its original direction.
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 friction force from the road
If you swing a bucket of water fast enough in a vertical circle, at the highest point the water
does not spill out. This happens because an outward force balances the pull of gravity on the
water
false
A particularly scary roller coaster contains a loop-the-loop in which the car and rider are
completely upside down. If the radius of the loop is with what minimum speed must the car
traverse the loop so that the rider does not fall out while upside down at the top? Assume
the rider is not strapped to the car.
14.9 m/s
In a carnival ride, passengers stand with their backs against the wall of a cylinder. The
cylinder is set into rotation and the floor is lowered away from the passengers, but they
remain stuck against the wall of the cylinder. For a cylinder with a 2.0-m radius, what is the
minimum speed that the passengers can have so they do not fall if the coefficient of static
friction between the passengers and the wall is 0.25?
2.3 m/s
, Brick A is dropped from the top of a building. Brick B is thrown straight down from the same
building, and neither one experiences appreciable air resistance. Which statement about
their accelerations is correct?
The two bricks have exactly the same acceleration.
An object is moving with constant non-zero acceleration in the +x direction. The position
versus time graph of this object is
a straight line making an angle with the time axis.
An object is moving with constant non-zero velocity in the +x direction. The velocity versus
time graph of this object is
a straight line making an angle with the time axis.
An object is moving with constant non-zero acceleration in the +x direction. The velocity
versus time graph of this object is
a straight line making an angle with the time axis.
The slope of a position versus time graph gives
velocity.
The slope of a velocity versus time graph gives
acceleration.
If the position versus time graph of an object is a horizontal line, the object is
At rest
If the velocity versus time graph of an object is a horizontal line, the object is
moving with zero acceleration.
You are making a circular turn in your car on a horizontal road when you hit a big patch of ice,
causing the force of friction between the tires and the road to become zero. While the car is
on the ice, it
moves along a straight-line path in its original direction.
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 friction force from the road
If you swing a bucket of water fast enough in a vertical circle, at the highest point the water
does not spill out. This happens because an outward force balances the pull of gravity on the
water
false
A particularly scary roller coaster contains a loop-the-loop in which the car and rider are
completely upside down. If the radius of the loop is with what minimum speed must the car
traverse the loop so that the rider does not fall out while upside down at the top? Assume
the rider is not strapped to the car.
14.9 m/s
In a carnival ride, passengers stand with their backs against the wall of a cylinder. The
cylinder is set into rotation and the floor is lowered away from the passengers, but they
remain stuck against the wall of the cylinder. For a cylinder with a 2.0-m radius, what is the
minimum speed that the passengers can have so they do not fall if the coefficient of static
friction between the passengers and the wall is 0.25?
2.3 m/s
, Brick A is dropped from the top of a building. Brick B is thrown straight down from the same
building, and neither one experiences appreciable air resistance. Which statement about
their accelerations is correct?
The two bricks have exactly the same acceleration.
An object is moving with constant non-zero acceleration in the +x direction. The position
versus time graph of this object is
a straight line making an angle with the time axis.
An object is moving with constant non-zero velocity in the +x direction. The velocity versus
time graph of this object is
a straight line making an angle with the time axis.
An object is moving with constant non-zero acceleration in the +x direction. The velocity
versus time graph of this object is
a straight line making an angle with the time axis.
The slope of a position versus time graph gives
velocity.
The slope of a velocity versus time graph gives
acceleration.
If the position versus time graph of an object is a horizontal line, the object is
At rest
If the velocity versus time graph of an object is a horizontal line, the object is
moving with zero acceleration.
