Answer:
566.3 m
Explanation:
The distance travelled by the object can be found by using the SUVAT equation:
where
u is the initial velocity
t is the time
a is the acceleration
For the object in this problem:
u = 19 m/s
a = 2.5 m/s^2
Substituting t = 15 s, we find the distance travelled:
The answer is: A. 19.3 joules
<h2>Why?</h2>Since it's an elastic collision, the kinetic energy after and before the collision will be the same.
Kinetic energy can be calculated using the following equation:
Where:
So,
First object, (going to the right):
Second object:, (going to the left):
Remember,
Hence,
The total kinetic energy after the collision will be:
The total kinetic energy after the collision is 19.3 joules (rounded to the nearest tenth)
Have a nice day!