Physics Unit Review

How long is the red bar?

• 2 cm

• 2.3 cm

• 2.34 cm

• 2.341 cm

Spongebob Squarepants wants to know if flipping Krabby Patties makes them taste better. We sets up an experiment with 10 patties and flips each one a different number of times but still cooks them all for the same number of minutes. The number of flips is the ________________ variable

• manipulated

• responding

• controlled

• scientific

Spongebob Squarepants wants to know if flipping Krabby Patties makes them taste better. We sets up an experiment with 10 patties and flips each one a different number of times but still cooks them all for the same number of minutes. The taste of the Krabby Patty is the ________________ variable

• manipulated

• responding

• controlled

• scientific

NUMERICAL RESPONSE:

Shirley runs from home to school, 1.50 km [E], and then from school to the post office, 326 m [W]. What is the magnitude of her displacement? Express your answer is AB.C x 10^D m and record ABCD.

NUMERICAL RESPONSE:

Radhika participated in a speed skating competition where she skated a distance of 1600 m in 5.00 minutes. What was her speed, in m/s?

Jas did an experiment where he created a distance-time graph for a rolling ball. Which of the following is false?

• The slope of the graph represents the speed of the ball.

• The area underneath the graph represents the work done by the ball.

• The graph is a straight line with a nonzero slope.

• The line of best fit does not need to go through the origin.

Naya drops her physics textbook off the roof of the school. How do we go about calculating the speed it reaches before it hits the ground?

• Measure the time it takes to fall and multiply that by the acceleration due to gravity.

• Measure the time it takes to fall and divide that by the acceleration due to gravity.

• Measure the time it takes to fall and multiply the height of the school by that time.

• Measure the time it takes to fall and divide the height of the school by that time.

Parivesh adopted a cat, named Raihan, who decided drag a couch across the room. If Raihan exerted a consistent force of 35.5 N on the couch and did 135 J of work on the couch, how far away from the its original spot did he move it?

• 3.8 m

• 3.80 cm

• 3.80 m

• 3.80 cm

NUMERICAL RESPONSE:

Parissa is swinging on a swing set. If her maximum speed is 5.2 m/s, and we assume that her kinetic energy is completely converted to potential energy, what is her maximum height, in metres?

Sudhanshu is driving a Greyhound bus down the highway at a speed of 115 km/h. If the bus and its contents have a mass of 16500 kg, what is the kinetic energy?

• 2.64 x 10⁵ J

• 1.68 x 10⁷ J

• 8.41 x 10⁶ J

• 8.42 x 10⁶ J