For a car with a mass of 1200kg, how long will it take for it to accelerate to 25m/s, starting from rest, with a total driving force of 1,500N?

This can be solved in 2 main sections: the first to find the acceleration of the car, and then the second to find how long it spends accelerating. To find the acceleration, Newton's 2nd Law (F=ma) can be used by first dividing each side by the mass to give us an equation for acceleration, a=F/m a=F/m  = 1500/1200 = 1.25 m/s^2 From this, the time can be found using the equation of motion: t = (v-u) / a ( v = final velocity (25 m/s), u = initial velocity (which we know to be 0m/s as the car starts from rest)) so t = (25 - 0) / 1.25   t = 20s It therefore takes 20 seconds for the car to reach 25 m/s.

CS
Answered by Christopher S. Physics tutor

4734 Views

See similar Physics GCSE tutors

Related Physics GCSE answers

All answers ▸

When a toothbrush is charging, p.d. across the primary coil is 230 V, p.d. across the secondary coil is 7.2 V. The primary coil in the charging base has 575 turns of wire on its coil. Find the number of turns on the secondary coil inside the toothbrush.


A plane is entering a turn, identify the main forces acting on it (including central forces)


explain the relationship between resistance and voltage in a filament lamp


How do you calculate the specific heat capacity of a substance?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences