STAAR Prep

The student in blue (left) is pulling with 50 N of force. The student in red (right) is pulling with 25 N of force. What is true about the outcome of the scenario?

• The boy in blue will win.

• They will not move at all.

• The boy in red will win.

• Both will fall down.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which statement best describes the relationship between the kinetic and potential energy of a boulder as it rolls downhill?

•  Its kinetic energy increases as its potential energy increases.

• Its kinetic energy decreases as its potential energy increases

• Its potential energy decreases as its kinetic energy increases.

• Its kinetic energy decreases as its potential energy decreases.

Tags

NGSS.MS-PS3-5

Which of these best shows a change from potential to kinetic energy?

• Water flowing over a tall cliff

• A rubber band being stretched

• A car slowing to a stop.

• A stone lying on top of a mountain

Tags

NGSS.MS-PS3-4

This graph represents...

• Decreasing speed

• Increasing speed

• constant speed

• none of the above

Tags

NGSS.MS-PS3-1

Two students are working together to build a birdhouse. Student 1 applies a force of 10N to a wooden board in order to slide it across the table to student 2. If the force of friction resisting the student's push is 4N, what is the net force acting on the board? Hint: the forces are moving in opposite directions. Should you add or subtract?

• 4N

• 6N

• 10N

• 14N

Tags

NGSS.MS-PS2-2

The formula for Force is

• F= MxW

• F= MxA

• F=MxT

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Acceleration is when 

• objects speed up

• change direction

• Both A. and B. 

• Neither A or B

Newtons 3rd Law explains 

• For every action, there is an opposite but equal reaction

• F= MxA

• Inertia

• An object in motion stays in motion unless acted upon by an outside force

Tags

NGSS.MS-PS2-1

According to Newton's second law, if you increase the force applied to an object :

• it accelerates more

• it doesn't move

• you get more inertia

• it decelerates

Tags

NGSS.MS-PS2-2

According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will

• remain in motion.

• eventually come to a stop.

• change its momentum.

• accelerate.