Unbalanced Forces Review

According to Newton's second Law, which would take more force to slow down?

• The silver car

• The green car

• They would both take the same force

An object accelerates 8 m/s² when a force of 40 newtons is applied to it. What is the mass of the object?

• 4 kg

• 20 kg

• 5 kg

• 0.2 kg

What happens when unbalanced forces act on an object at rest?

• the object remains at rest
• the object begins moving in an unpredictable direction
• the object begins moving in the direction of the net force
• the object begins moving opposite to the direction of net force

What is the net force?

• 40 N left
• 0 N Balalnced
• 400 N right
• 40 N right

Football A has a greater mass than football B. Which football will have greater acceleration when both are thrown with the same force in the same direction?

• Football A

• Football B

• They will have the same acceleration

• Mass has no effect on acceleration

Will it take more force to push an empty shopping cart or a shopping cart that is full?

• The empty shopping cart
• The full shopping cart
• They will take the same amount of force

How much force is needed to accelerate a 2 kg physics book to an acceleration of 6 m/s/s?

• 36 N
• 12 N
• 3 N
• 0.33 N

What is the acceleration of an object traveling at a constant velocity?

• 10 m/s²
• 0 m/s²
• 250 m/s²
• 20 m/s²

Why would one ball accelerate more than the other when pushed with the same amount of force?

• Different weights
• Different forces
• Different masses
• Different sizes

A 1200 kg car is being driven down the road to the left, and the driver decides to accelerate and pass the car in front of them. While putting their foot on the gas, the car accelerates at a rate of 3.5 m/s/s, while also experiencing a 1250 N frictional force. How large is the force the engine creates to propel the car forward?

• 1250 N

• 1200 N

• 4200 N

• 5450 N