Practice

What can be a consequence of poor workstation design and height?

• Psychological hazards

• Chemical hazards

• Physical hazards

• Ergonomic hazards

How can a tennis ball and a bowling ball have the same momentum?

• have the same speed

• have different speeds

• one is moving backwards

• they can't

TRUE or FALSE

Objects at rest have zero momentum.

• TRUE

• FALSE

What are the units of energy?

• Watt

• Newton

• Joule

• Kelvin

Which is the correct equation for mechanical power?

• $P=\frac{w}{t}\ \ aka\ \ \ P=\frac{F\cdot d}{t}$

• $P=w\cdot d\ aka\ P=F\cdot d\cdot d$

The equation to calculate momentum is

• p=mv
• p=1/2mv²
• p=mgh
• p=mg