KinematicsHard
Question
A person drops from a building of height 20 m. same instant the front end of a tuck passes below the building moving with constant acceleration of 1 m/s2 and velocity of 2 m/s at that instant Length of the truck if the stone just misses to hit its rear part is : -
Options
A.6 m
B.4 m
C.5 m
D.2 m
Solution
Time of fall of stone = 
Horizontal displacement of truck is 2 sec
⇒ S = 2 × 2 +
× 1 × 4
Length of truck = 6m
Horizontal displacement of truck is 2 sec
⇒ S = 2 × 2 +
× 1 × 4Length of truck = 6m
Create a free account to view solution
View Solution FreeMore Kinematics Questions
A particle has an initial velocity of (3î + 4ĵ) m/s and a constant acceleration of (4î - 3ĵ) m/s2. I...Which of the following is smallest unit...A point move in a straight line under the retardation av2. If the initial velocity is u, distance covered in ‘t’ seconds...A ball is thrown vertically upwards. which of the following plots represents the speed - time graph of the ball during i...A sniper fires a rifle bullet into a gasoline tank making a hole 50 m below the surface of gasoline. The tank was sealed...