Asmall toy school bus rear-ends a big toy school bus initially at rest. the bigger bus is several times heavier than the smaller one. which of the following statements are true if the collision is elastic?
true / false / maybe.
1. the two busses continue together at the same speed.
2. mechanical energy is conserved.
3. the small bus exerts the same amount of force on the big bus as vice versa.
4. momentum is conserved.
5. the small bus will go backwards.

Explanation:

1 . The two busses continue together at the same speed.

FALSE STATEMENT .

The small bus will have twice the velocity of bigger bus  velocity in the same direction . The bigger bus will continue with the same velocity .

2. Mechanical energy is conserved

TRUE STATEMENT.

3  The small bus exerts the same amount of force on the big bus as vice versa.

TRUE STATEMENT.

4.Momentum is conserved

TRUE STATEMENT.

5.The small bus will go backwards

FALSE STATEMENT .

The small bus will have twice the velocity of bigger bus  velocity in the same direction .

i think the answer is a, hope this : )

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2