Answer:
Part A)
B. 0.4 N
Part B)
C. 5 m/s²
Explanation:
Part A)
Force: This can be defined as the product of mass and acceleration
F = ma .................. Equation 1
Where F = force of the blood, m = mass of the blood, a = acceleration of the blood.
Also,
a = (v-u)/t .............. Equation 2
Substituting equation 2 into equation 1
F = m(v-u)/t ............... Equation 3
Where v = initial velocity, u = final velocity, t = time.
Given: v = 1 m/s u = 0 m/s ( from rest) t = 0.2 s, m = 80 g = 0.08 kg.
Substitute into equation 3
F = 0.08(1-0)/0.2
F = 0.08/0.2
F = 0.4 N
The right option is B. 0.4 N
Part B)
Acceleration: This is defined as the rate of change of velocity.
a = (v-u)/t
Where a = acceleration, v = final velocity, u = initial velocity, t = time.
Given: v = 1 m/s u = 0 m/s (from rest), t = 0.2 s.
Substitute into the equation above,
a = (1-0)/0.2
a = 1/0.2
a = 5 m/s²
The right option is C. 5 m/s²
