Freefall Review 2021

Front

What happens to the speed of a ball when it is tossed upward and caught at the same position in the absence of air resistance?

Back

The speed of the ball when it is caught is the same as the speed it had when tossed upwards.

Front

What is the acceleration of a ball tossed upward at different points in its trajectory?

Back

The ball has constant acceleration throughout its motion: on the way up, at the top of its path, and on the way down.

Front

If an object is thrown upwards with a speed of 14 m/s, how can we calculate the maximum height it reaches?

Back

The maximum height can be calculated using the formula: h = (v^2)/(2g), where v is the initial velocity and g is the acceleration due to gravity.

Front

What is the direction of acceleration for an object traveling upwards?

Back

The acceleration is directed downwards due to gravity.

Front

What is the velocity of a ball as it returns to its initial height after being thrown straight up at 20.0 m/s?

Back

The velocity as it returns to its initial height is -20 m/s.

Front

Define free fall in the context of physics.

Back

Free fall is the motion of an object under the influence of gravitational force only, with no other forces acting on it.

Front

What is the value of acceleration due to gravity (g) near the surface of the Earth?

Back

The acceleration due to gravity (g) is approximately 9.81 m/s².

Front

Explain the concept of maximum height in projectile motion.

Back

Maximum height is the highest point reached by a projectile, where its velocity becomes zero before it starts descending.

Front

What is the relationship between the time taken to rise and the time taken to fall in free fall?

Back

The time taken to rise to the maximum height is equal to the time taken to fall back to the original height.

Front

How does air resistance affect the motion of a ball thrown upwards?

Back

Air resistance opposes the motion of the ball, reducing its speed and altering its trajectory compared to motion in a vacuum.