24-25 Term 3 P6 Reviewer

The horizontal and vertical components of the initial velocity of 45 m/s projected at an angle of 30 degrees are _______ respectively.

• 39 m/s, 22.5 m/s

• 22.5 m/s, 39 m/s

• 45 m/s, 30 m/s

• 45 m/s, 0 m/s

Which surface has a higher coefficient of friction with your foot?

• Marble

• Ice rink

• Dry Concrete

• Wet Concrete

Answer explanation

Rougher surface higher coefficient of friction

The vertical _________ of a projectile  is always -9.8 m/s².

The vertical _________ of a projectile is zero at the highest point

Launching objects at ____________ angles produces the same range.

Object that is launched into the air under the sole influence of gravity is called ___________.

• Apex

• Projectile

• Parabola

• Trajectory

Launching objects at ________ produces the maximum range.

• 1

• 2

• 3

• 4

A rocket is in the air with its motor on moving upward and experiencing air drag. How many forces are exerted on the rocket?

• 1

• 2

• 3

• 4

A helicopter flying horizontally at constant velocity. While moving, it drops a package at a certain height. Assuming no air resistance, where will it land relative to the moving helicopter?

• behind the helicopter

• in front of the helicopter

• directly below the helicopter

• needs more information