An 800 kgs. fireman slides down a pole in a fire station. His grip on the pole causes a frictional force of 240 newtons opposing his fall. What is the approximate value of his acceleration towards the floor below?
A car accelerates for 10s at 6 m/s2. What is its final seed if its initial was 4 m/s?
A rope attached to a post in the ground is pulled horizontally with a force of 80 kg. The pole pulls back with a force of
We know that forces are vectors because
The algebraic sign of acceleration depends on
A force of 100 dynes acts for 10 seconds on a body of mass500g. What is the change in momentum?
Which of the following vector quantities? I. Density II. Acceleration III. Energy IV. Force
When a body is accelerated
Which of the following is not accelerated?
If a car is to gain momentum, it must
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