Question

Which of these can NOT be negative?

a. acceleration and momentum.
b. speed and velocity.
c. distance and speed.
d. displacement and distance.

Answer 1

c. distance and speed.

Step-by-step explanation:

According to byjus,

"The ratio of distance traveled and the time taken by a body can be zero but not negative. Since distance and time are positive quantities and speed is obtained by the ratio of these two quantities, speed cannot be negative". ( 2022, BYJU'S. All rights reserved.)

Answer 2

Any quantity that has a direction (a 'vector' quantity) is negative
whenever it happens to be opposite to the direction you call positive.

Acceleration, momentum, velocity, and displacement are all vectors.

The only choice that doesn't include anything with direction is 'C'.