| ⇦ | 
| ⇨ |
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: - If the unit of force and length are doubled, then unit of energy will be
- The velocity of radio-waves is 3×10⁵ km/s. The frequency corresponding to wavelength
- In Young’s double slit experiment, the wavelength of the light used is doubled
- The work done in which of the following processes is equal to the change in internal energy
- Two identical charges repel each other with a force equal to 10 mgwt they are 0.6 m
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
- If the unit of force and length are doubled, then unit of energy will be
- The velocity of radio-waves is 3×10⁵ km/s. The frequency corresponding to wavelength
- In Young’s double slit experiment, the wavelength of the light used is doubled
- The work done in which of the following processes is equal to the change in internal energy
- Two identical charges repel each other with a force equal to 10 mgwt they are 0.6 m
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
Leave a Reply