Your friend is constructing a balancing display for an art project. She has one rock on the left ( ms=2.25 kgms=2.25 kg ) and th
1 answer:
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Answer:
0.528m
Explanation:
a)58.7 cm = 0.587 m
Let g = 9.8m/s2. When the frog jumps from ground to the highest point its kinetic energy is converted to potential energy:
where m is the frog mass and h is the vertical distance traveled, v is the frog velocity at take-off
b) Vertical and horizontal components of the velocity are
The time it takes for the vertical speed to reach 0 (highest point) under gravitational acceleration g = -9.8m/s2 is
This is also the time it takes to travel horizontally, we can multiply this with the horizontal speed to get the horizontal distance it travels
<u>Answer:</u>
2.39 kg
<u>Explanation:</u>
There is conservation of momentum here in this problem so we will use the following problem:
where the mass of the student is 48.5 kg,
the mass of the skateboard is
kg,
the initial speed of the student is 4.25 m/s; and
the speed of the student and skateboard is 4.05 m/s.
So substituting the given values in the above formula to get:
Therefore, the mass of the skateboard is 2.39 kg.