Physics Quiz: Chapter 2 Kinematics

What is a projectile in physics?

• A body projected vertically

• A body moving with constant velocity

• A body projected at an angle to the horizontal and moves under gravity

• A body projected horizontally

What are the two components of motion in a projectile?

• Upward and downward

• Forward and backward

• Vertical and horizontal

• Clockwise and counterclockwise

What is the maximum range achieved for a certain speed of projection u?

• 30 degrees

• 90 degrees

• 45 degrees

• 60 degrees

Why does the horizontal distance of a ball increase steadily when fired horizontally?

• Due to constant velocity

• Due to air resistance

• Due to gravity

• Due to acceleration

What is the equation to calculate vertical distance fallen by an object?

• horizontal distance = 2.8 x t

• s = ut + 1/2at^2

• horizontal distance = 2.5 x t

• vertical distance = 1/2 x 9.81 x t^2

How long does a stone take to reach the ground when thrown horizontally with a velocity of 12 m/s from a cliff top?

• 4 seconds

• 3 seconds

• 5 seconds

• 2 seconds

What is the horizontal distance travelled by a ball thrown at 20 m/s at an angle of 30 degrees to the horizontal?

• 25m

• 30m

• 35m

• 40m

What is the speed of a marble that rolls off a table at a height of 2.0m and lands 2.8m away?

• 4 m/s

• 6 m/s

• 8 m/s

• 10 m/s

In a rugby goal post conversion, what is the speed of the ball kicked from 22m away at an angle of 45 degrees?

• 30 m/s

• 25 m/s

• 20 m/s

• 35 m/s

What is the magnitude and direction of the velocity of the ball as it goes over the cross-bar in the rugby goal post conversion?

• 25 m/s, downwards

• 20 m/s, upwards

• 35 m/s, vertical

• 30 m/s, horizontal