Question: A commuter backs her car out of her garage with an acceleration of 1.4 m/s² (a) How long does it take her to reach a speed of 2.00 m/s
Answer:
1.43 s
Explanation:
Applying,
a = (v-u)/t........... Equation 1
Where a = acceleration, v = final velocity, u = initial velocity, t = time
make t the subject of the equation
t = (v-u)/a........... Equation 2
From the question,
Given: v = 2 m/s, u = 0m/s (from rest), a = 1.4 m/s²
Substitute into equation 2
t = (2-0)/1.4
t = 1.43 s
Answer:
Light is a wave as well as a particle. It is both.
Explanation:
Light sometimes acts like a particle. It sometimes acts like a waves. So it is safe to say that light is both a particle and a wave. It all depends on the situation the light is on. In simple words, light is comprises of small energy packets which are known as photons. These photons can experience refraction, diffraction, reflection etc which are the properties of a wave. Apart from that, a photon also had a fixed energy, fixed momentum and a fixed location, which are the properties of a particle. Hence, light behaves as both waves and particle depending on the condition.
Answer:
D
Explanation:
I think the answer is D, because of hallucinations
That looks very confusing
Explanation:
use this equation
Vx = V0 + at
since body is at rest initially, V0 = 0
F = ma
a = F/m = 10/2 = 5m/sec^2
Vx = a*t = 5m/sec^2 * 5sec = 25m/sec