When a body covers equal distance in equal intervals of time, its motion is said to be :
(A) Non-uniform (B) Uniform (C) Accelerated (D) Back and forth
1 Answers
Talk Doctor Online in Bissoy App
A person travelling on a straight line moves with a uniform velocity v_1 for some time and with uniform velocity v_2 for the next equal time.
(a) v = (v1 + v2)/2. Explanation: Let t be the time related to each velocity. Total distance travelled =v1t+v2t. Total time taken=2t. Hence average velocity = v1t+v2t/2t =(v1+v2)/2.
1 Answers 1 views
The time period of a particle in simple harmonic motion is equal to the time between consecutive .
(b) an extreme position EXPLANATION: At the extreme position the particle is in the same phase at consecutive appearance, hence (b) is true. In all other options, the consecutive appearance of the...
1 Answers 1 views
A person travelling on a straight line moves with a uniform velocity v1 for a distance x and with a uniform velocity v2 for the next equal distance.
(c) 2/v = 1/v1 + 1/v2. Explanation: Time taken during first phase = x/v1 and during second phase = x/v2. Total distance =2x Total time taken = (x/v1)+(x/v2) = x(1/v1 +1/v2) Average velocity =Total distance/Total...
1 Answers 27 views
A car travels a distance of 75 km at the speed of 25km/ hr. It covers the next 25 km of its journey at the speed of 5 km/hr and the last 50 km
(c) Time taken to cover first 75 km of distance =75/25 =3 hours Time taken to cover next 25 km of distance =25/5 =5 hours Time taken to cover last 50 km of its journey =50/25...
1 Answers 1 views
A car travels a distance of 45 kms at the speed of 15 kmph. It covers the next 50 kms of its journey at the speed
(e) Time taken to cover a distance of 45 kms =45/15 = 3 hours Time taken to cover a distance of 50 kms =50/25 = 2 hours Time taken to cover distance of 25...
1 Answers 1 views
A bike covers a certain distance at the speed of 64 km/hr in 8 hours. If a bike was to cover the same distance in approximately 6 hours,
(b) Distance = 64 × 8 = 512 km Speed =512/6 = 85 km/hr (approx.)
1 Answers 1 views
Six books are labelled A, B, C, D, E and F and are placed side by side. Books B, C, E and F have green covers while others have yellow covers.
(b) Books Covers Volume Law/Medical A Yellow New Law B Green New Law C Green Old Law D Yellow New Medical E Green Old Medical F Green Old Medical Therefore, E and F are old medical extracts and have green covers.
1 Answers 1 views
A body whose position with respect to surrounding does not change, is said to be in a state of : (A) Rest (B) Motion (C) Vibration (D) Oscillation
Is said to be in a Rest
1 Answers 1 views
A body is said to be in motion if : (A) Its position with respect to surrounding objects remains same
(B) Its position with respect to surrounding objects keep on changing
1 Answers 1 views
A and B start walking from the same point. A foes North and covers 3km; then turns right and covers 4km.
correct answer is (B) 9km.
1 Answers 1 views