8.6A & 8.6C Twilight Camp

The forces acting an a toy car are shown.

In which direction will the race car move and with how much force?

• Right, 11 Newtons

• Left, 11 Newtons

• Right, 1 Newton

• Left, 1 Newton

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which of the following situations is an example of unbalanced forces acting upon an object?

• A rock accelerating as it rolls down a hill.

• A rope being pulled from both sides with equal force.

• A car moving constantly at 30 miles per hour.

• A science text book lying on the floor.

Tags

NGSS.MS-PS2-2

Provided is a diagram showing forces on a box. What is the net force on the box?

• 10 Newtons West

• 10 Newtons East

• 90 Newtons West

• 90 Newtons East

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NGSS.MS-PS2-2

Safety belts protect people in cars in the event of an accident because, according to Newton’s Laws of Motion, when an impact causes the car to suddenly change its motion, -

• the people in the car will continue to move in the same direction and at the same speed as before the impact.
• the speed of the car always increases, giving it greater force since the mass will remain the same.
• the speed of the people always increases, since now they have, not one, but two forces acting on them.
• the car now has a greater overall mass - its own mass plus the mass of the object by which it has been struck.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

According to Newton’s Law of Inertia, an object that is moving will change its motion only if what kinds of forces act on it?

• Constant forces
• Unbalanced forces
• Unbalanced forcesStrong forces
• Gravitational forces

Tags

NGSS.MS-PS2-2

A 70-kg adult and a 35-kg child face each other on ice skates. Applying Newton’s Laws of Motion, what will happen if the two skaters push against each other?

• The adult will move backward, and the child will not move.
• The adult will not move, and the child will move backward.
• They will both move backward at the same speed.
• They will both move backward, but the child will move at a faster speed.
  

Tags

NGSS.MS-PS2-1