the answer is d, cuz i just did it rn on my study island and i got it right :)
Answer: the answer is c.The unbalanced push causes the cart to speed up.
Explanation:
The application of an unbalanced force (the push) causes the cart to speed up. When the cart is in constant motion, the forces are balanced and there is no speeding up. Once an unbalanced force is added, the cart's speed changes.
Sled going down is in motion
Sled hitting rock is unbalanced
He flew because the of the sudden stop threw them off
That Answer would be...
C. Fireworks exploding
because this is a chemicals change the creates the fireworks.
