J J Science Academy

Subject: Physics| Topic: 4. Linear kinematics| SubTopic: 4.7 2-D Projectile Motion| Test Type: NEET| Marks: __| Time: __| Date: __
1.

The coordinates of a moving particle at time t are given by $x=ct^{3}$ and $y=bt^{3}$. The speed of the particle, $at t=1$ s, is

(1) $3\sqrt{b^2+c^2}$ (2) $3(b+c)$ (3) $3(b^2+c^2)$ (4) $\sqrt{b^2+c^2}$