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

⇦

⇨

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. An electron in potentiometer experiences a force 2.4×10⁻¹⁹N. The length of potentiometer
2. The threshold wavelength for photoelectric effect of a metal is 6500 Å. The work function
3. The wavelength of first line of Balmer series is 6563Å. The wavelength of first line
4. A plank with a box on it at one end is gradually raised about the other end.
5. The volume of a nucleus is directly proportional to

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.

---

Share this page with your friends