The engine of a car provides a forward force of 1240 ...
The engine of a car provides a forward force of 1240 N and the total resistive force on the car is 800N. If the mass of the car is 1220 kg, determine the distance the car has to travel from the rest before acquiring a speed of 4 m s\(^{-1}\).
44.0 m
22.2 m
11.1 m
5.5 m
Correct answer is B
Acceleration[a] = \(\frac{[forward - resistive]force}{mass}\)
a = \(\frac{1240-800}{1220}\) → \(\frac{440-800}{1220}\)
a = 0.36m/s\(^2\), v = 4m/s, s = ?
Second equation of motion:
s is distance
u is initial velocity
v is final velocity
a is acceleration
v\(^2\) = u\(^2\) + 2as
4\(^2\) = 0\(^2\) + 2 * 0.36 * s
16 = 0.72s
22.2m = s
The defect of the eye lens which occurs as a result of weak ciliary muscles is called ...
A metallic sphere is heated from 27°C to 200°C Without change of state. Which of the fo...
A direct current of 5A flow through a 0.2H inductor. Calculate the energy stored in the inductor...
Which of the diagrams above shows the position at which a small ball-bearing is in neutral equi...
A pressure cooker saves both time and fuel in cooking because inside the cooker, the ...
Which of the following does NOT describe the Image formed by a plane minor? ...
Which of the following statements about defects of vision is/are CORRECT? i. for a long sighted p...