Answer:
Friction or tension
Explanation:
Friction stops an object from moving in the presence of force
Answer: All of our energy comes from the sun, which is our nearest star. The sun sends out huge amounts of energy through its rays every day. We call this energy solar energy or radiant energy. Without the sun, life on earth would not exist, since our planet would be totally frozen.
Answer:
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Explanation:
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Answer:
A stop watch
A speedometer
Explanation:
Acceleration is the rate of change of velocity of an object with respect to time.
The speedometer can indicate the different speeds, the starting and the final velocity. Then with the stop watch can be used to capture the change in time.
However, acceleration can be measured directly using an accelerometer.
Explanation:
Let us assume that piece 1 is is facing west side. And, piece 2 is facing south side.
Let = m and = 2m. Hence,
= 10.5 m/s
= 10.5 m/s
=
= 14.84 m/s
or, = 15 m/s
Hence, the speed of the third piece is 15 m/s.
Now, we will find the angle as follows.
=
=
=
Therefore, the direction of the third piece (degrees north of east) is north of east.