Home › AP EAPCET (Engineering) › Physics › Motion in a Straight Line › A car covers half a distance at 40 km/h and the …
A car covers half a distance at 40 km/h and the rest at 60 km/h. Average speed is
A50 km/h
B52 km/h
C48 km/h
D45 km/h
Answer & Solution
Correct answer: C. 48 km/h
Average speed is 2(40)(60)/(40+60) = 48 km/h since equal distances are covered.
Related questions
Which kind of motion did Domingo de Soto in 1545 correctly identify with uniformly accelerA cyclist moving at 10 m/s accelerates uniformly at 2 m/s^2 for 4 s. What is the final speHow many of the five SUVAT variables does each constant-acceleration equation of motion coA scooter starts from rest and reaches 20 m/s with a uniform acceleration of 5 m/s^2. WhatA train speeds up uniformly from 10 m/s to 30 m/s in 10 s. What is its acceleration?A bike moving at 20 m/s brakes with a uniform retardation of 4 m/s^2. How long does it takA car starts from rest and accelerates uniformly at 2 m/s^2 along a straight road. How farA body moves with constant velocity. Its acceleration is