Projectile motion basics - Level 2 Physics NCEA

What is the ONLY factor that can be applied to the vertical and horizontal motion at the same time?

• Initial Velocity

• Final Velocity

• Acceleration

• Time

• Distance

When an object falls towards the earth you will already know two things. . what are they?

• Acceleration and vertical distance moved

• Initial velocity at the top and final velocity at the bottom

• Initial velocity at the top and acceleration

• Final velocity at the bottom and vertical distance moved

What is the name given to the shape of motion that ball takes.

• Parabolic

• Sigmoidal

• Bilateral

When an object moves vertically upwards away from the earth you will know two things. . what are they?

• Final velocity at the top of the movement and Initial velocity

• Initial velocity at the bottom and acceleration

• Final velocity at the top and acceleration

• Final velocity at the bottom and vertical distance moved

What is the only force that acts on an object undergoing projectile motion and in which direction does it act?

• Friction acting horizontally against the direction of movement

• Gravity acting upwards away from the earth

• Thrust acting in direction of object moving

• Gravity acting downwards towards the earth

The speed of the aircraft is 30 ms^-1 and it is flying horizontally at 50 m above ground when it releases a life raft that lands next to the yacht. That is the horizontal velocity of the life raft when it is dropped?

• 30 ms^-1

• 0 ms^-1

• 50 ms^-1

• 15 ms^-1

The speed of the aircraft is 30 ms^-1 and it is flying horizontally at 50 m above ground when it releases a life raft that lands next to the yacht. That is the initial vertical velocity of the life raft when it is dropped?

• 30 ms^-1

• 0 ms^-1

• 50 ms^-1

• 15 ms^-1

The speed of the aircraft is 30 ms^-1 and it is flying horizontally at 50 m above ground when it releases a life raft that lands next to the yacht. Calculate the time it takes the life raft to reach the water?

• 5.1 s

• 3.19 s

• 30 s

• 1.5 s

The speed of the aircraft is 30 ms^-1 and it is flying horizontally at 50 m above ground when it releases a life raft that lands next to the yacht. Calculate the velocity of the raft as it hits the water.

• 31.3 ms^-1

• 15.1 ms^-1

• 50 ms^-1

• 25 ms^-1

A catapult is used to throw a backpack across a river. The bag travels at a velocity of 8.2 ms^-1 an angle of 50° to the horizontal as shown. Calculate the vertical component of the bags motion.

• 10.2 ms^-1

• 9.7 ms^-1

• 6.3 ms^-1

• 6.8 ms^-1