Motion in a Plane

Q1.The velocity of a particle at angle theta to the velocity of projection at the maximum height of 2 m is (g = 10 m/s^2, v_0 = 10 m/s, theta = 30 degrees):

• A5 sqrt(3) m/s
• B5 m/s
• C10 m/s
• D5 sqrt(2) m/s

Q2.A scalar quantity is one that has:

• Amagnitude and direction
• Bmagnitude only
• Cdirection only
• Dneither magnitude nor direction

Q3.A projectile is launched at 30 degrees above the horizontal with speed v_0. The time of flight is (g = 10 m/s^2, v_0 = 20 m/s):

• A1 s
• B2 s
• C3 s
• D4 s

Q4.The velocity vector of a particle in uniform circular motion is always:

• Adirected towards the centre
• Bdirected away from the centre
• Ctangent to the circle
• Dalong the radius

Q5.The horizontal component of velocity in projectile motion:

• Aincreases during flight
• Bdecreases during flight
• Cremains constant throughout
• Dbecomes zero at the highest point