1. A force F is required to push a crate along a horizontal floor at constant sp
ID: 2290762 • Letter: 1
Question
1. A force F is required to push a crate along a horizontal floor at constant speed v with friction present. What force would be necessary to push the crate on the same floor at a constant speed 3v, if the friction is the same as before.
a constant force 3F
a force that gradually increases to 3F
a constant force F
no force
2. When you are driving on a freeway at constant speed you still keep your foot on the acceleration. However, the total (net) force on the car is:
in the forward direction
towards rear
0 (zero)
depends on your speed
towards the center of the Earth
Explanation / Answer
1) A constant force F
2) zero
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