Newton's Laws and Work/Power

Newton's first law of motion states that an object will stay in motion or motionless UNLESS it is acted with an __________ force

• balanced

• unbalanced

• powerful

• weak

what is the correct formula for force?

• F = m X a

• $F=\frac{m}{a}$

• $F=\frac{a}{m}$

• $F=a\times v$

What is inertia?

• the same thing as gravity

• a group of particles that combine to make force

• a tendency to do nothing or to remain unchanged

• none of the above

If you push your hands against your wall, the wall pushes back on you with ________ force

• weaker

• stronger

• neutral

• equal

What's the formula for WORK?

• Force x Distance

• Force + Distance

• Mass x Acceleration

• Distance / Time

What is the formula for POWER?

• Power = Time + Work

• Power = Work / Time

• Power = Work / Distant

• Power = Newton x Joule

If the mass of an object is 1000 kg on Earth, what is it's mass on the moon?

• 10kg
• 100kg
• 1000kg
• 10,000kg

The force of gravity on Jupiter is a little more than 2 times the gravitational force on Earth. If an object has a mass of 50 kg and a weight of 490 N on Earth, what would be the object's approximate mass and weight on Jupiter?

• 50 kg and 490 N
• 100 kg and 490 N
• 50 kg and 980 N
• 100 kg and 980 N

if you push a cart with a force of 60 N for 2 m... how much work have you done

• 120 J
• 30 J
• 120 N 
• 30 N

Which of the following is the best example of work being done.

• doing homework

• lifting a box

• pushing a stationary box

• holding a box