A particle has initial velocity (2i⃗+3j⃗) and acceleration (0.3i⃗+0.2j⃗). The magnitude

A Particle Has Initial Velocity 2i3j And Acceleration 03i02j The Physics Question

A particle has initial velocity (2i⃗+3j⃗) and acceleration (0.3i⃗+0.2j⃗). The magnitude of velocity after 10 seconds will be:

Options

(a) 9 √2 units
(b) 5 √2 units
(c) 5 units
(d) 9 units

Correct Answer:

5 √2 units

Explanation:

v⃗ = u⃗ + a⃗t
v = (2i + 3j) + (0.3i + 0.2j) x 10 = 5i +5j
| v⃗ | = √ (5² + 5²)
| v⃗ | = 5 √2

Related Questions:

  1. A liquid boils when its vapour pressure equals
  2. An A.C source is rated at 220 V, 50 Hz. The time taken for voltage to change
  3. A 200 W sodium street lamp emits yellow light of wavelength 0.6 µm
  4. When two displacements represented by y₁=a sin(?t) are superimposed the motion is
  5. Two straight wires each 10cm long are parallel to one another and seperated by 2 cm.

Difficulty Level: Easy (1008)
Topics: Motion in Straight Line (93)
Subject: Physics (2479)

Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score

18000+ students are using NEETLab to improve their score. What about you?

Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.

NEETLab Mobile App

Share this page with your friends

Be the first to comment

Leave a Reply

Your email address will not be published.


*