Will give correct answer brainliest A class assignment requires the building of a solar powered car that will travel at
least 10 meters in 10 seconds. Each group is given one solar cell for their design.
Which of these would improve the design the most?

A. Making the size of the car bigger.

B. Using a thicker axle.

C. Reducing the mass of the design.

D. Adding mass to the design.

Ametal ring 4.20 cm in diameter is placed between the north and south poles of large magnets with the plane of its area perpendicular to the magnetic field. these magnets produce an initial uniform field of 1.12 t between them but are gradually pulled apart, causing this field to remain uniform but decrease steadily at 0.240 t/s . (a) what is the magnitude of the electric field induced in the ring? (b) in which direction (clockwise or counterclockwise) does the current flow as viewed by someone on the south pole of the magnet?

22. the top of a cliff is located a distance h above the ground. at a distance h/2 there is a branch that juts out from the side of the cliff, and on this branch a bird's nest is located. two children throw stones at the nest with the same initial speed, one stone straight downward from the top of the cliff and the other stone straight upward from the ground. in the absence of air resistance, which stone hits the nest in the least amount of time?

What is "decrease in velocity" i need offering 60 !