2. What is equal to the kinetic energy of a car with a mass of 0.5t (tonne) if it travels evenly at 70
km/h?​

7.14kg/h

Explanation:

=500kg/70h

=7.14kg/h

a. vertically

explanation:

i tried it and took the test

if im wrong then we have different tests

the speed of the cart after 3 seconds of low fan speed is ⇒ 54.0 cm/s.

the speed of the cart after 5 seconds of medium fan speed is ⇒ 120.0 cm/s.

the speed of the cart after 2 seconds of high fan speed is ⇒ 64.0 cm/s. 

just did the lab.