Will give brainliest, 25 points: A cannonball is launched straight up from the ground at 13.5 m/s. How much time is the cannonball in the air (hangtime)?

Molten iron fills a mould, which has a volume of 200 cm cubed. calculate the volume when the iron cools and solidifies.

When a 5.0kg cart undergoes a 2.2m/s increase in speed, what is the impulse of the cart

In order of decreasing light-transmitting capabilities of materials, which is the correct sequence? a. transparent -> translucent -> opaque b. opaque -> transparent -> translucent c. opaque -> translucent -> transparent d. translucent -> transparent -> opaque