phy test

what is the S.I. unit of length?

• centimeter
• meter
• kilometer
• millimeter

Which one is a vector quantities?

• Acceleration
• Force
• Velocity
• Mass

Which one is scalar quantities?

• Temperature
• Mass
• Distance
• Speed

Assuming that the force exerted by Tiago (not Thiago) on the earth is 1962 N.

what is the magnitude?

• 19247.22 N

• 200 N

• 1962 N

• 500 N

What is the unit of energy?

• Calories (Cal)
• Watts (W)
• Kilojoules (kJ)
• Joules (J)

what is the equation of kinetic energy?

• KE = 2mv
• KE = 1/2 m^2v
• KE = 1/2 mv^2
• KE = mv^2

what is the equation of potential energy?

• E = 1/2 mv^2

• E = mgh

• E = Fd

• E = 2mgh

The car travels at a constant speed of 3 m/s for 10 seconds. Find the distance traveled.

Formula:

Distance=Speed×Time

• 15 m
• 25 m
• 40 m
• 30 m

Aaron ran 500 meters in 10 seconds. Find his average speed.

Formula:

Speed ​​=Distance/time

​

• 100 meters per second
• 50 meters per second
• 75 meters per second
• 25 meters per second

An object starts from rest and accelerates at an acceleration of 2 m/s² for 5 seconds. Find the final velocity.

Formula:

v=u+at (u=0)

• 20 m/s
• 15 m/s
• 10 m/s
• 5 m/s