Final speed after collision with the wall

before collision the speed of ball initially

time taken for the collision

now as per the formula of acceleration we know that

now plug in all values in it


so acceleration is - 5 m/s/s for above situation
I had this question already I still have my answer the answer is D is the correct answer.
Answer:
Tools that require electricty like drills
Explanation:
Answer:
The car appears to be moving 30 km/hr in the opposite direction of the bus.
Explanation:
<span>law of conservation of </span>energy<span> is </span><span><span>states that energy of the universe remains constant cant be created nor destroyed and conserving energy is not using as much power as you was like trying to make power bill lower while law of conservation is constant </span> </span>