A ball is thrown horizontally at a speed of 10 m/s from the top of a cliff 78.4 m high.
a. How long does it take the ball to reach the bottom of the cliff ?
4 sec
100
An object which is thrown horizontally is called a trajectory
False
100
What is the amount of matter in an object?
Mass
200
A ball is thrown horizontally at a speed of 10 m/s from the top of a cliff 78.4 m high.
How far from the base of the cliff does the ball strike the ground?
40 meters
200
The greater the horizontal velocity at which a projectile is launched the greater the horizontal distance will be
True
200
When an object is a projectile, what is the shape of the path that it travels?
Parabola
300
A truck traveling at 20 m/s rolls off the edge of a cliff. The cliff is 44.1 m above the ocean.
How far from the base of the cliff does the car strike the water?
60 m
300
The greater the horizontal velocity at which a projectile is launched the greater the time of flight will be.
False
300
What is mass x gravity, the force of gravity on an object?
Weight
400
3 sec
A truck traveling at 20 m/s rolls off the edge of a cliff. The cliff is 44.1 m above the ocean.
How long does it take for the truck to hit the water.
400
On a projectile the velocity is constant horizontally.
True
400
What is the motion of an object when the only force is gravity?
Free fall
500
Projectiles move in one dimension.
False, Projectiles move in two dimensions
500
What is the speed and direction at a specific time