Acceleration

The video explains acceleration as a change in speed, providing examples like cars, trolleys, and baseballs. It highlights that acceleration results from forces, such as gravity, which causes objects to fall faster as they approach the Earth's surface. The video concludes with a thought-provoking question about whether a baseball accelerates when caught.

Which of the following scenarios is an example of acceleration?

• A clock ticking at a steady pace

• A person standing still

• A train leaving the station

• A car maintaining a constant speed on a highway

What is always the cause of acceleration?

• A change in temperature

• A change in color

• A force

• A change in direction

Why do objects fall faster as they get closer to the Earth's surface?

• Because the air resistance decreases

• Because the pull of gravity becomes stronger

• Because they become heavier

• Because they gain more mass

Which force is primarily responsible for the acceleration of falling objects?

• Magnetic force

• Frictional force

• Gravitational force

• Electrostatic force

When a catcher catches a baseball, is the baseball accelerating?

• No, because it is in motion

• No, because it stops moving

• Yes, because it changes direction

• Yes, because it changes speed