Grade 9 Need for speed speed and forces quiz

How many metres are there in 8.5 km?

• 8500

• 850

• 8000

• 800

What is the speed of an object which moves 1000 m in 20 seconds?

• 50 m/s

• 40 m/s

• 60 m/s

• 45 m/s

What forces are acting on you right now?

• Friction and normal

• Weight and lift

• Weight and normal

• Thrust and drag

What is wrong with the statement 'I weigh 50kg'?

• It should be in kilograms

• It should be in pounds

• It should be in grams

• It should be in Newtons

What is the relationship between lift and thrust for the slow moving Glider?

• Lift is greater than thrust

• Lift and thrust are equal

• None of the above

• Thrust is greater than lift

What is the force that opposes motion as surfaces rub together and get stuck?

• Lift

• Friction

• Drag

• Thrust

What will affect the friction a car experiences with the road?

• All of the above

• Surface of the road

• Type of tires

• Weight of the car

What is the resultant force when forces are the same size, acting in opposite directions?

• 10N

• 5N

• 0N

• 15N

What happens to the motion of an object if it has a resultant force of 0N?

• It accelerates

• It decelerates

• It remains stationary

• It changes direction

If an object has a net force of 300N to the right, what will happen to its motion?

• It will decelerate

• It will remain stationary

• It will accelerate to the left

• It will accelerate to the right