Sps8 D

The illustration shows forces acting on a box.

What is the net force on the box if the sliding friction between the box and the floor is 5N?

• 5N to the left

• 8N to the right

• 13N to the right

• zero net force

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A boat moves forward through water with a force of 5,100 newtons(N). The water resists with forces equaling 4,800N. What is the net force acting on the boat?

• 300N

• 4800N

• 5100N

• 9900N

Tags

NGSS.MS-PS2-2

Two sailboats are moving as shown in the graph. Which statement is correct based on the data in the graph?

• Boat A traveled faster than Boat B.

• Boat B traveled faster than Boat A.

• Boat A traveled for a longer time than Boat B.

• Boat B traveled for a longer time than Boat A.

Tags

NGSS.MS-PS3-1

Newton's first law of motion states that an object at rest will stay at rest unless acted upon by an outside force. Which activity is an example of this law?

• A football is kicked off a tee.

• A baseball player slides into second base.

• A floating stick is carried over a waterfall.

• A bicycle travels faster as it goes downfall.

After a storm, a hospital may have to rely on backup generators to power some equipment. Which is the energy conversion provided by the generators?

• mechanical energy to electrical energy

• thermal energy to mechanical energy

• nuclear energy to mechanical energy

• thermal energy to electrical energy

Tags

NGSS.HS-PS3-3

Mountain bike tires have large, knob-like treads. These tires are useful on steep slopes because they_______________________.

• increase friction

• carry heavy weights

• increase the stopping distance

• prevent braking of the bicycle

Rowing a boat forward requires a force that will overcome friction from water and wind. Which factor MOST helps overcome the forces working against the boat?

• the length of the boat

• the height of sides of the boat

• the weight of the rowers in the boat

• the number of people rowing in the boat

Tags

NGSS.MS-PS2-2

Riding a bicycle produces several forms of energy. Which form of energy is produced in the GREATEST amount by pedaling a bicycle down the sidewalk?

• chemical

• radiant

• kinetic

• sound

Angela has a toy made out of a coil of wire. She places the toy at the top of some stairs. The toy can travel down each step, end-over-end.

Which type of energy does the toy have when it is placed at the top of the stairs?

• electric

• kinetic

• magnetic

• potential

Tags

NGSS.MS-PS3-2

The drawing shows a waterfall flowing into a pool of water. Which statement BEST describes the energy of the objects in the drawing?

• The pool of water has more kinetic energy and the falling water has more potential energy.

• The falling water has potential energy and the rock which it flows has kinetic energy.

• The water has potential energy at the top of the waterfall and increasing kinetic energy as it falls.

• The water at the top of the fall has kinetic energy that becomes potential energy as it falls into the pool.

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-5