Here are the answer options for the questions in the picture! A) 20 joules of work is done by the object
B) 10 joules of work is done by the object
no work is done by the object
C) 70 joules of work is done on the car
D) 100 joules of work is done by the car
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each question belongs to one of these answers i have answered some but I got them wrong

How do hydroponic plants differ from nonhydroponic plants? a.) hydroponic plants can grow in a dryer soil. nonhydroponic plants grow in moist soil. b.) hydroponic plants grow on other plants and are known as air plants. nonhydroponic plants do not grow on other plants. c.) hydroponic plants can only grow in rain forests. nonhydroponic plants cannot grow in rain forests. d.) hydroponic plants are grown without soil. nonhydroponic plants are grown in soil.

What type of nuclear decay causes the atomic number of an element to increase by 1?

Wavelength of 125 meters is moving at a speed of 10 m/s. what is it's frequency?