Exploring Forces and Motion Concepts

The video tutorial explains how motion is represented using graphs, focusing on distance-time and velocity-time graphs. It covers how to interpret these graphs, calculate speed and acceleration, and understand the concepts of work, energy, and momentum. The tutorial also discusses the conservation of momentum in collisions, providing practical examples and explanations.

What does a horizontal line on a distance-time graph indicate?

• The object is accelerating.

• The object is moving at a constant speed.

• The object is stationary.

• The object is decelerating.

If the slope of a distance-time graph is steep, what does it tell us about the object's speed?

• The object is moving slowly.

• The object is stationary.

• The object is moving quickly.

• The object is moving at a constant speed.

On a velocity-time graph, what does a horizontal line represent?

• The object is accelerating.

• The object is decelerating.

• The object is stationary.

• The object is moving at a constant velocity.

What does a sloped line on a velocity-time graph indicate?

• The object is moving at a constant speed.

• The object is accelerating or decelerating.

• The object is stationary.

• The object is moving at a constant velocity.

How do you calculate speed?

• Velocity divided by time.

• Time divided by distance.

• Distance divided by time.

• Distance multiplied by time.

What is the formula for acceleration?

• Distance divided by velocity.

• Velocity multiplied by time.

• Change in velocity divided by time.

• Change in distance divided by time.

What is work measured in?

• Meters

• Watts

• Joules

• Newtons

What type of energy is gained when lifting an object against gravity?

• Gravitational potential energy

• Heat energy

• Kinetic energy

• Elastic energy

What is the formula for kinetic energy?

• Mass times velocity

• Half mass times velocity squared

• Mass times acceleration

• Force times distance

What happens to the total momentum before and after an explosion?

• It increases.

• It becomes zero.

• It decreases.

• It remains the same.