A student picks up two spheres that are the same size. One is made of steel and the other is made of aluminum. The student notic
2 answers:
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The correct answer is: acceleration.
In fact, the slope of the graph of velocity versus time corresponds to the ratio between the variation of v and the variation of t:
But this is exactly the definition of acceleration:
, so acceleration is the correct answer.
In fact, the slope of the graph of velocity versus time corresponds to the ratio between the variation of v and the variation of t:
But this is exactly the definition of acceleration:
The boulder has a weight of W=2400 N. The weight of an object is the product between its mass m and the gravitational acceleration g:
Rearranging the relationship, we can calculate the mass of the boulder:
We are told that Superman applies a horizontal force to this object, and as a result, the acceleration of the boulder is
. We can find the force applied by using Netwon's second law of motion:
Rearranging the relationship, we can calculate the mass of the boulder:
We are told that Superman applies a horizontal force to this object, and as a result, the acceleration of the boulder is