The steering wheel of a car has a radius of 36 cm, and part of rest with an acceleration of 1.8m / s. Determine a) The angular speed after 10s
b) The number of turns the wheel gave in 10s

a) 50 rad/s

b) 39.8 rev

Explanation:

Given:

r = 0.36 m

v₀ = 0 m/s

a = 1.8 m/s

t = 10 s

a) Find: ω

v = at + v₀

v = (1.8 m/s) (10 s) + (0 m/s)

v = 18 m/s

ω = (18 m/s) / (0.36 m)

ω = 50 rad/s

b) Find: Δθ

Δx = v₀ t + ½ at²

Δx = (0 m/s) (10 s) + ½ (1.8 m/s) (10 s)²

Δx = 90 m

Δθ = (90 m) / (2π × 0.36 m)

Δθ = 39.8 rev

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s

explanation:

considering the bohr theory, the type of connection that requires the transfer the answer conuldn't be right