Forces and Motion Exploration (SC.6.P.12.1/13.3)

A car travels at a constant speed. If it covers a distance of 60 meters in 3 seconds, what is its speed?

• 15 m/s

• 20 m/s

• 18 m/s

• 25 m/s

Which of the following graphs best represents an object moving at a constant speed?

• A straight line with a positive slope

• A curved line

• A horizontal line

• A straight line with a negative slope

A student measures the time it takes for a toy car to travel different distances. Which of the following methods would best help the student determine if the car is moving at a constant speed?

• Calculate the average speed for each distance

• Measure the car's speed at the start and end of each distance

• Graph the distance versus time and check for a straight line

• Compare the longest and shortest times

Which of the following is an example of a contact force?

• Gravitational force

• Magnetic force

• Frictional force

• Electrical force

A magnet is placed near a pile of iron filings. Which type of force is acting on the iron filings?

• Gravitational force

• Magnetic force

• Frictional force

• Electrical force

A student wants to investigate the effect of gravitational force on different objects. Which experiment would best help the student understand this force?

• Dropping different objects from the same height and measuring the time taken to reach the ground

• Measuring the weight of different objects using a spring scale

• Observing the motion of a pendulum

• Comparing the speed of a rolling ball on different surfaces

If a graph of distance versus time for an object is a straight line, what does this indicate about the object's motion?

• The object is accelerating

• The object is moving at a constant speed

• The object is decelerating

• The object is stationary

Which of the following scenarios best illustrates a force acting at a distance?

• A person pushing a shopping cart

• A book resting on a table

• A magnet attracting a paperclip

• A car braking to a stop

A student observes that a ball rolls faster on a smooth surface than on a rough surface. Which type of force is primarily responsible for this difference in speed?

• Gravitational force

• Magnetic force

• Frictional force

• Electrical force

A student is asked to design an experiment to measure the effect of magnetic force on different materials. Which of the following steps should the student include in their plan?

• Use a spring scale to measure the weight of each material

• Place each material at a fixed distance from a magnet and observe the attraction

• Drop each material from a height and measure the time taken to reach the ground

• Roll each material down a ramp and measure the speed