If a baseball and a cannonball are dropped from the same height at the same time, which ball will hit the ground first assuming there is no air resistance?
Why do astronauts in space appear weightless?
Which is true of the reaction force of the chair that you are sitting on?
Which of the following is the equation for Newton's second law of motion?
Which is a common unbalanced force acting on objects in motion?
A car with a mass of 1400 kg moves along the ice with a constant velocity of 18.0 m/s. What is the car's momentum?
When a bowling ball collides with a bowling pin, the momentum of the ball
If a moving boxcar gently collides with a boxcar at rest and the two boxcars move together, their combined momentum will be
Which of the following objects has the least acceleration?
A cue ball rolls toward a billiard ball with a velocity of 1.0 m/s east. Both balls have identical masses. What happens to the total momentum after the two balls collide?
Why do astronauts in an orbiting spacecraft appear weightless?
An ice skater with a mass of 65 kg moves along the ice with a constant velocity of 2.0 m/s. What is the skater's momentum?
An object is in projectile motion if it
When a soccer ball is kicked, the action and reation forces do not cancel each other out because
Why does a crumpled piece of paper land before a flat piece of paper?
Which of the following will increase the acceleration of an object that is pushed by a force?
Which of the following is in projectile motion?
Air resistance causes the speed of a falling object to
A falling object's terminal velocity is reached when the force of gravity
A car stopped at a traffic light is best described by
momentum, free fall, terminal velocity, inertia, projectile motion, centripetal force, velocity, gravity, first, second, third, increases, decreases, one third, one fourth, one half,
When air resistance exactly matches the downward force of gravity, a falling object stops accelerating and reaches ________________________.
momentum, free fall, terminal velocity, inertia, projectile motion, centripetal force, velocity, gravity, first, second, third, increases, decreases, one third, one fourth, one half,
An object at rest tends to remain at rest. This property is called __________________.
momentum, free fall, terminal velocity, inertia, projectile motion, centripetal force, velocity, gravity, first, second, third, increases, decreases, one third, one fourth, one half,
Only in a vacuum or in space can an object be in _______________________.
momentum, free fall, terminal velocity, inertia, projectile motion, centripetal force, velocity, gravity, first, second, third, increases, decreases, one third, one fourth, one half,
A car accelerating from 60 km/h to a constant speed of 80 km/h has increased its ___________________.
momentum, free fall, terminal velocity, inertia, projectile motion, centripetal force, velocity, gravity, first, second, third, increases, decreases, one third, one fourth, one half,
The horizontal movement given to an arrow by a bow is one componant of ___________________.
momentum, free fall, terminal velocity, inertia, projectile motion, centripetal force, velocity, gravity, first, second, third, increases, decreases, one third, one fourth, one half,
The unbalanced force that causes objects to move in a circular path is called a(n) _____________________.
momentum, free fall, terminal velocity, inertia, projectile motion, centripetal force, velocity, gravity, first, second, third, increases, decreases, one third, one fourth, one half,
The product of the mass and velocity of an object is called the ___________________.
momentum, free fall, terminal velocity, inertia, projectile motion, centripetal force, velocity, gravity, first, second, third, increases, decreases, one third, one fourth, one half,
The tendency of all objects to resist any change in motion is called ___________________.
momentum, free fall, terminal velocity, inertia, projectile motion, centripetal force, velocity, gravity, first, second, third, increases, decreases, one third, one fourth, one half,
The forward motion of a spacecraft combines with its motion in ____________________ to cause orbiting.
momentum, free fall, terminal velocity, inertia, projectile motion, centripetal force, velocity, gravity, first, second, third, increases, decreases, one third, one fourth, one half,
A satellite stays in orbit around Earth because of __________________.
momentum, free fall, terminal velocity, inertia, projectile motion, centripetal force, velocity, gravity, first, second, third, increases, decreases, one third, one fourth, one half,
The _______________ of a falling object can be calculated if the acceleration due to gravity and the time the object falls are known.
momentum, free fall, terminal velocity, inertia, projectile motion, centripetal force, velocity, gravity, first, second, third, increases, decreases, one third, one fourth, one half,
A pitched baseball follows a curved path because of the force of ______________________.
momentum, free fall, terminal velocity, inertia, projectile motion, centripetal force, velocity, gravity, first, second, third, increases, decreases, one third, one fourth, one half,
A 0.30 kg ball moving west at 6.0 m/s has ____________________ as much momentum as a 0.60 kg ball moving with the same velocity.
momentum, free fall, terminal velocity, inertia, projectile motion, centripetal force, velocity, gravity, first, second, third, increases, decreases, one third, one fourth, one half,
According to the Law of Conservation of Momentum, when two objects stick together after a collision, their velocity _____________________.
momentum, free fall, terminal velocity, inertia, projectile motion, centripetal force, velocity, gravity, first, second, third, increases, decreases, one third, one fourth, one half,
The Law of Conservation of Momentum is equivalent to Newton's ________________ law of motion.
the path of one object around another in space
the unbalanced force that causes objects to move in a circular path
the motion of a body when only gravity acts on it
the curved path of a thrown object near Earth's surface
the constant velocity of a falling object when the force of gravity is balanced by air resistance
the force that opposes the motion of objects through air
This causes a change in the motion of an object.
This increases with an object's mass, making it harder to change the velocity of the object.
This force between a sliding object and a surface causes the sliding object to slow down.
The force exerted by a bat on a baseball, with respect to the baseball's force against the bat.
Use Newton's Third Law to explain how a person hammering a nail into a block of wood is demonstrating conservation of momentum.
Why would a feather dropped from the same height as an acorn fall to Earth more slowly than the acorn?
A skier with a mass of 45 kg moves with a velocity of 10.0 m/s east. What is the skier's momentum?
Why do you have to aim above a target that you want to hit with a thrown object?
What is the equation for momentum?