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Let r1(t) = 3t i cap + 4t^2 j cap and r2(t) = 4t^2 i cap + 3t j cap represent the positions of particles 1 and 2, respectively as functions of time t; r1(t) and r2(t) are in metres and t is in seconds. The relative speed of the two particles at the instant t = 1 s, will be- (1) 1 m/s (2) 3root2 (3) 5root2 (4) 7root2 |
| Answer» Let r1(t) = 3t i cap + 4t^2 j cap and r2(t) = 4t^2 i cap + 3t j cap represent the positions of particles 1 and 2, respectively as functions of time t; r1(t) and r2(t) are in metres and t is in seconds. The relative speed of the two particles at the instant t = 1 s, will be- (1) 1 m/s (2) 3root2 (3) 5root2 (4) 7root2 | |