Pre AP ICP - Unit 9 Review

Front

What is the acceleration due to gravity on Earth?

Back

9.81 m/s²

Front

What is free fall?

Back

Free fall is the motion of an object under the influence of gravitational force only, with no air resistance.

Front

How do you calculate the speed of an object in free fall after a certain time?

Back

Speed = Acceleration × Time. For example, after 4.9 seconds, speed = 9.81 m/s² × 4.9 s = 48.1 m/s.

Front

What is the formula to calculate distance traveled at a constant speed?

Back

Distance = Speed × Time.

Front

If an object falls from a height, how do you calculate the time it takes to hit the ground?

Back

Use the formula: Time = √(2 × Height / g), where g is the acceleration due to gravity (9.81 m/s²).

Front

What is the relationship between mass and the time it takes for an object to fall?

Back

In a vacuum, all objects fall at the same rate regardless of mass.

Front

How far does an object fall in 1 second?

Back

Distance = 0.5 × g × t² = 0.5 × 9.81 m/s² × (1 s)² = 4.905 m.

Front

What is the speed of an object after falling for 2 seconds?

Back

Speed = g × t = 9.81 m/s² × 2 s = 19.62 m/s.

Front

How do you convert km/min to km?

Back

Multiply the speed in km/min by the time in minutes.

Front

What is the formula for calculating time taken to cover a distance at a constant speed?

Back

Time = Distance / Speed.