Question

1.19. A point traversed half a circle of radius R = 160 cm during
time interval x = 10.0 s. Calculate the following quantities averaged
over that time:
(a) the mean velocity (v);
(b) the modulus of the mean velocity vector (v) I;
(c) the modulus of the mean vector of the total acceleration I (w)I
if the point moved with constant tangent acceleration.
1.20. A radius vector of a particle varies with time t as r =
= at (1 — cct), where a is a constant vector and a is a positive factor.

Answer 1

Explanation:

hope its helpful to u

thank you