Answer:
0.02 N
Explanation:
Force: This can be defined as the product of mass and acceleration. The S.I unit of force is Newton.
The formula of force is given as,
F = ma ............................ Equation 1
Where F = force exerted by the heart muscle, m = mass of the blood, a = acceleration.
Also,
a = (v-u)/t ....................... Equation 2
Where v = final velocity, u = initial velocity, t = time.
Given: v = 0.35 m/s, u = 0.25 m/s, t = 0.1 s
Substitute into equation 2
a = (0.35-0.25)/0.1
a = 0.1/0.1
a = 1 m/s².
Also given: m = 20 g = 0.02 kg.
Substitute into equation 1
F = 0.02(1)
F = 0.02 N.
Hence the force = 0.02 N
Answer:
0.02 N.
Explanation:
Given:
m = 20 g
= 0.02 kg.
vi = 0.35 m/s
vo = 0.25 m/s
t = 0.1 s
Force, F = m * a
Where,
m = mass of the blood
a = acceleration.
Acceleration, a = (vi - vo)/t
Where,
vi = final velocity
vo = initial velocity
t = time.
a = (0.35 - 0.25)/0.1
= 0.1/0.1
= 1 m/s².
F = 0.02 * 1
= 0.02 N.
