The explosions that take place during a fireworks show are an example of which of the following? Image of fireworks exploding in air

Chemical change
Chemical property
Physical change
Physical property

A10.0 kg cart and a 15kg cart are locked together with a compressed spring between them. they are then released so that the spring pushes the two carts apart. the 10.0 kg cart is moving at 4.5 m/s afterward. how fast is the 15kg cart moving? 3.0 m/s 2.0 m/s 4.5 m/s 5.0 m/s

Who was the first scientist to measure speed as distance over time?

Dao makes a table to identify the variables used in the equations for centripetal acceleration. what quantities belong in cells x and y?