MOTION FINAL REVIEW #1

Front

What is the formula to calculate the final velocity of an object in free fall?

Back

Final velocity (v) = initial velocity (u) + (acceleration due to gravity (g) * time (t)). For free fall, initial velocity (u) is usually 0.

Front

What is the acceleration due to gravity on Earth?

Back

9.8 m/s².

Front

How do you calculate average speed?

Back

Average speed = total distance / total time.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.

Front

If an object falls for 15 seconds, what is its velocity at impact ignoring air resistance?

Back

147 m/s.

Front

What is the average velocity of an object?

Back

Average velocity = total displacement / total time.

Front

How do you calculate the distance traveled by an object in free fall?

Back

Distance (d) = initial velocity (u) * time (t) + 0.5 * acceleration (a) * time².

Front

What is the average speed of a train that travels 600 km in 4 hours?

Back

150 km/hr.

Front

What is the average velocity of Walt who ran 5 kilometers in 25 minutes eastward?

Back

0.2 km/m east.

Front

What is the significance of air resistance in motion?

Back

Air resistance opposes the motion of an object, affecting its acceleration and final velocity.