Forces and Speed

A push or a pull that starts, stops or changes the direction of an object

• force

• energy

• gravity

• motion

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Forces are measured with units called

• Meters

• Newtons

• Length

• Miller

Which is an example of a force?

• Gravity

• weather

• sleeping

• swimming

A force can ....................... (choose three)

• speeds up a moving object

• change the direction of a moving object

• make a stationary object moves

• increase the mass of an object

What is the net force?

• 20 N 
• 0 N 
• 400 N 
• 40 N 

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Calculate the Net Force. 

• 60N, Left 
• 40N, Right 
• 0N
• 60N, Right

Tags

NGSS.MS-PS2-2

What is the formula for Speed?

• speed= time x distance

• speed= distance x time

• speed= speed2 - speed 1/time

• speed= disance/time

Calculate the speed of Stan running down the hall at the end of the day on a Friday afternoon if he is moving 25 meters in 5 seconds.

• 5 m/s

• 125 m/s

• 15 m/s

• 25 m/s

What is the formula for acceleration?

• change in speed / change in time

• change in speed x change in time

• change in distance / change in time

• change in distance x change in time

The SI unit for acceleration is

• $\frac{m}{s^2}$

• $\frac{m}{s}$

• N

• $\frac{N}{m^2}$