The Big Grade 9 Review Quiz! (featuring Kai and Max!)

What is the formula for calculating the force down an inclined plane?

Calculate the tension in the two ropes

• 14517 N, 12682 N

• 17935 N, 15638 N

• 5 N, 3 N

• 17935 N, 12682 N

A person kicks a ball with an initial velocity of 20 m/s at an angle of 27° above the horizontal. Find the total time the ball is in the air and the horizontal range.

• 1.76s, 38m
• 1.85s, 33m
• 3.7s, 66m
• 2.19s, 29m
• None

A 562 N trunk is on a frictionless plane inclined at 30.0o from the horizontal. What is the acceleration of the trunk down the ramp?

• 1.8 m/s^2
• 3.2 m/s^2
• 4.9 m/s^2
• 5.4 m/s^2
• None

A person standing on the edge of a 50m high cliff throws a stone horizontally with a speed of 18 m/s How long will it take the stone to strike the bottom of the cliff and how far will it travel horizontally?

• 1.88s, 26.4m
• 5.31s, 77.2m
• 4.11s, 95m
• 3.19s, 57.5m
• None

Calculate the tension in the two ropes

• 533 N, 408 N

• 396 N, 283 N

• 612 N, 564 N

• 577 N, 577 N

A 10 kg block of ice slides down a ramp 20 m long, inclined at 10° to the horizontal. If the co-efficient of friction is 0.1, find the acceleration of the block.

• 2.11 m/s^2
• 0.73 m/s^2
• 1.24 m/s^2
• 0.52 m/s^2
• None

Calculate the tension in the two ropes

• 4516 N, 3995 N

• 5783 N, 3758 N

• 4243 N, 3752 N

• 7364 N, 7471 N

A 4kg box starts to slide on an incline of 25o. If the coefficient of kinetic friction on the incline is 0.1, how fast and how far will the box travel in 5 seconds?

• 18.7 m/s, 51.3m
• 10.6 m/s, 24.1m
• 12.4 m/s, 32.4m
• 16.3 m/s, 40.6m
• None

What is the coefficient of friction of an object moving down at 20 o slope at a constant speed of 12 m/s?

• 0.36
• 0.57
• 0.23
• 0.22
• None