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☆☆☆☆☆Cards in this guide (8)
A plane is uniformly accelerated from 60 ms to 80 ms in 12 seconds what is the distance traveled by the plane during this period
((60m/s+80m/s)/2)x12s=840m
A force of 20 N gives a ball an acceleration of 4.0 ms on a level frictionless surface what is the mass of the ball
F=ma
m=F/a
m=20/4.0
m=5Kg
A plane traveling at 80 ms lands on a runway and comes to rest after 10 seconds What was the plane's deceleration
-80/10 = -8 m/s2
A ball is thrown horizontally from a cliff at a speed of 15 ms and strikes the ground 45 meters from the base of the cliff How high was the cliff rounded to the nearest meter
Answer: 44 meters
What does a force cause a mass to do
accelerate
What does a force applied to a stationary object give the object
"Motion" or "Momentum"
A pulley system is used to lift a 2000 newton engine up a distance of 3 meters The operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor To lift the engine fi
250 newtons
A+ Answers
Acceleration due to gravity is usually equal to m s³
9.80
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