What is the average speed of a rock launched 700km from a catapult in 15 seconds
1 answer:
Answer:
Therefore the average speed of a rock launched 700km from a catapult in 15 seconds is 46666.66 m/s or 46.66 km/s.
Explanation:
Given:
Total Distance Covered = 700 km = 700 × 1000 meter = 700000 m
Time taken = 15 seconds = 15 s
To Find:
Average speed of a rock = ?
Solution:
Average speed:
Average speed is defined as the rate of total distance covered in per unit time.
It is given as
Substituting the given values we get
Therefore the average speed of a rock launched 700km from a catapult in 15 seconds is 46666.66 m/s or 46.66 km/s.
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Answer:
-8.04 m/s2
Explanation:
To find the answer to this, you have to use the 4th kinematic equation:
You plug into the equation to get:
solve for a to get
-8.04 m/s2
Answer:
42.11 sec
Explanation:
In first part : The truck start from the rest that is u = 0 m/sec
Acceleration is given as
It reaches to a velocity of 22 m/sec so v=22 m/sec
Now according to first law of motion
In second part : The truck maintain a constant speed for 22 sec
In third part : The truck takes an additional 4.4 sec for stopping
So total time in which the truck is in motion =15.71+22+4.4=42.11 sec