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Newton/Work/Power
Question | Answer |
---|---|
What is force? | A push or pull |
What unit do we measure force in? | Newtons |
What is work? | Amount of energy transferred by a force over a certain distance |
What force is being applied to an object whose mass is 20kg and is accelerating at a rate of 10m/s ? F=MxA | 200 N |
Billy is jumping on a trampoline. The harder he jumps down, the harder the trampoline pushes him up. Which one of Newton's Laws of Motion is this an example of? | Newton's third law |
In a Newton's cradle, when one ball on one side is lifted and dropped, one ball on the opposite side will do the same. Which law does this illustrate? | Newton's third law |
The acceleration of a sled depends on the force provided by the dogs and the --- (hint: F=MxA) | Mass |
The picture below shows which of Newton's Laws? Picture shows books sitting still on a shelf, not moving. | Newton's first law |
In Science a push or pull is called | Force |
What is the net force on the soccer ball being kicked with a force of 75 N to the right and 125 N to the left? Include the direction. | 50 N to the left |
Using the formula W=FxD, how much work is being done by a person who pushes a lawnmower with a force of 50N a distance of 450m? | 22,500 J |
Using the formula W= FxD, how much force is applied to move a rock 25 m using 55,000 J of work? | 2,200 N |
A box is being pushed on opposite sides with a force of 50 N on each side. Is this an example of balanced or unbalance forces? | Balanced |