Question

1. to make the robot push another robot more easily you should

a use chains instead of gears
b. use a physically larger version of the same battery
c use smaller wheels
d use a gear ratio that delivers less torque to the wheels
e use a gear ratio that delivers more torque to the wheels

Explanation:

Torque is the rotational force that helps in pushing. A higher torque delivered to the wheels (by using a proper gear ratio) will make it easier for the robot to push another robot. Smaller wheels would not directly contribute to easier pushing in terms of the force - related aspect as much as torque. Using chains instead of gears might not be relevant for the pushing force. A larger version of the same battery would just be a power - source size change not directly related to pushing force. Delivering less torque would make pushing harder.

Answer:

E. use a gear ratio that delivers more torque to the wheels