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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: - A solenoid 1.5 m long and 0.4 cm in diameter possesses 10 turns per cm length
- A uniform force of (3i+j) Nacts on a particle of mass 2 kg.Hence the particle is displaced
- An unpolarised beam of intensity I₀ falls on a polaroid. The intensity
- The half-life of radioactive element is 600 yr. The fraction of sample
- The maximum and minimum intensities of two sources is 4:1. The ratio of amplitude is
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
- A solenoid 1.5 m long and 0.4 cm in diameter possesses 10 turns per cm length
- A uniform force of (3i+j) Nacts on a particle of mass 2 kg.Hence the particle is displaced
- An unpolarised beam of intensity I₀ falls on a polaroid. The intensity
- The half-life of radioactive element is 600 yr. The fraction of sample
- The maximum and minimum intensities of two sources is 4:1. The ratio of amplitude is
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
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