1st Semester Exam 2024

Front

What is the mass on the triple beam balance?

Back

232.5 grams.

Front

Which simple machine is the MOST efficient for lifting an object 30 meters off the ground?

Back

Pulley.

Front

A bicycle rider travels 100 miles in 4 hours. What is the cyclist's average speed?

Back

25 miles/hr.

Front

Which of the following is NOT one of the things a machine can do?

Back

Changes the amount of work done.

Front

Which 2 letters have the most kinetic energy?

Back

X & Z.

Front

What is the formula for calculating average speed?

Back

Average Speed = Total Distance / Total Time.

Front

Define 'kinetic energy'.

Back

The energy an object possesses due to its motion.

Front

What is the principle of a pulley?

Back

A pulley changes the direction of the force applied to lift an object.

Front

What is work in physics?

Back

Work is done when a force causes an object to move in the direction of the force.

Front

What is the formula for work?

Back

Work = Force x Distance.