The position vector of a particle changes with time according to the relation r(t)=15t² î+ (4 - 20t²)j What is the magnitude of the acceleration at t = 1 - VgyanHub

Question:

The position vector of a particle changes with time according to the relation r(t)=15t² î+ (4 – 20t²)j What is the magnitude of the acceleration at t = 1

Options :

(a) 25
b) 100
(c) 40
(d) 50

Answer :

(d) 50

Answer Steps :

Step 1:

Step 2:

Video Tutorial

Related Questions

An alternating voltage source is connected in series with a resistance R and an inductance L. If the potential drop across the resistance is 200 V and across the inductance is 150 V, then the applied voltage is:

A 1 µF condenser is charged to 50 V. The charging battery is then disconnected and a 10 mH coil is connected across the capacitor so that LC oscillations occur. What is the maximum current in the coil ? Assume that the circuit contains no resistance. The capacity of a pure capacitor is 1 F. In d.c. circuits, its effective resistance will be

In an a. c. circuit the instantaneous current and e.m.f. are represented as: I = I0 sin(ωt – π/6) and E = E0 sin(ωt + π /3) respectively. The voltage leads the current by

Explore Our Courses