Question

in which situation is the resultant force on the body equal to zero?
A a car turning a corner at constant speed
B
a rock falling freely on the Moon
С a train going up a straight hill at constant speed in a straight line
D an aircraft accelerating along a runway in a straight line​

Answer 1

Answer:

c.a train going up a straight hill at constant speed in a straight line

Explanation:

an object moving at same speed in the same direction.

Answer 2

Answer:

B a rock falling near the surface of moon

Explanation

gravitational field strength  and resultant force cancel each other

in short free faLL