Physics - Motion

What is the significance of a negative acceleration?

• It indicates that an object is speeding up.

• It indicates that an object is at rest.

• It indicates that an object is slowing down.

• It indicates that an object is moving in a circular path.

What is an example of constant speed?

• A truck driving straight and using cruise control.

• A car accelerating at a steady rate.

• A bicycle going downhill without pedaling.

• A train coming to a stop at a station.

What is the formula for average speed?

• Average speed = Total distance / Total time.

• Average speed = Total time / Total distance.

• Average speed = Distance x Time.

• Average speed = Total distance + Total time.

How do you calculate the distance traveled if you know speed and time?

• Distance = Speed + Time.

• Distance = Speed - Time.

• Distance = Speed x Time.

• Distance = Speed / Time.

How does friction affect motion?

• Friction has no effect on motion.

• Friction opposes the motion of an object, causing it to slow down or stop.

• Friction increases the speed of an object.

• Friction only affects objects in water.

What is the effect of gravity on falling objects?

• Gravity causes objects to float upwards.

• Gravity has no effect on falling objects.

• Gravity causes objects to accelerate downwards at approximately 9.81 m/s².

• Gravity causes objects to fall at a constant speed.

What is the relationship between acceleration, change in speed, and time?

• Acceleration = Change in speed / Time.

• Acceleration = Change in speed * Time.

• Acceleration = Change in speed + Time.

• Acceleration = Change in speed - Time.

What is the concept of inertia?

• The force that causes an object to move in a circular path.

• The tendency of an object to resist changes in its state of motion.

• The speed at which an object travels in a straight line.

• The energy required to change the temperature of an object.

What does it mean when an object is in motion?

• An object is in motion if it is moving at a constant speed.

• An object is in motion if its position changes relative to a reference point.

• An object is in motion if it is accelerating.

• An object is in motion if it is in a state of rest.

Convert 65 grams to milligrams.

• 65 milligrams

• 650 milligrams

• 65,000 milligrams

• 6,500 milligrams