Speed is the rate of change in distance covered by a moving body. It is given by dividing distance covered and time taken.
She takes 3 seconds to read the text which is equivalent to 3/ 3600 ( since 1hr=3600 secs) . we get 0.00833 hours.
Distance is given by speed × time
= 60 km/h × 0.00833 hrs = 0.05 km
Therefore, the car moved a distance of 0.05 km while she read the text.
Acceleration = (change of speed) / (time for the change)
Acceleration = (27m/s - 0m/s) / (10 s) = 2.7 m/s per second = 2.7 m/s²
Answer:
750 kN
Explanation:
Pressure = force / area
P = F / A
1,150,000 Pa = F / 0.65 m²
F = 747,500 N
Rounded to two significant figures, the force is 750,000 N, or 750 kN.