NEET Physics Kinematics MCQs Set B

Q.14 A body travels 200 cm in the first two seconds and 220 cm in the next 4 sec with same acceleration. The velocity of the body at the end of the 7th second is :
(1) 5 cm/s (2) 10 cm/s (3) 15 cm/s (4) 20 cm/s

Q.15 A particle travels 10min first 5 second, 10min next 3 seconds.Assuming constant acceleration what is the distance travelled in next 2 second :
(1) 8.3m (2) 9.3m (3) 10.3m (4)None of these

Q.16 Initially a body is at rest. If its acceleration is 5ms^–2 then the distance travelled in the 18th second is:
(1) 86.6m (2) 87.5m (3) 88m (4) 89m

Q.17 A particle starts from rest, accelerates at 2m/s² for 10s and then goes at constant speed for 30s and then decelerates at 4m/s² till it stops.What is the distance travelled by it
(1) 750m (2) 800m (3) 700m (4) 850m

Q.18 From the top of a tower, a particle is thrown vertically downwards with a velocity of 10m/s.The ratio of the distances covered by it in the 3rd and 2nd seconds of themotion is (Take g = 10m/s²)
(1) 5: 7 (2) 7 : 5 (3) 3 : 6 (4) 6 : 3

Q.58 Which of the following quantities remains constant during uniform circular motion?
(1) Centripetal acceleration (2)Velocity
(3) Momentum (4) Speed

Q.59 Asphere thrown froma flying aeroplane shows _____ path-
(1) Parabolic (2)Circular (3)Straight line (4) Spiral

Q.60 CE and DF are two walls of equal height (20meter) from which two particles A and B of same mass are projected as shown in the figure.A is projected horizontally towards left while B is projected at an angle 37° (with horizontal towards left) with velocity 15 m/sec. If A always sees B to be moving perpendicular to EF, then the range of A on ground is :

(1) 24m (2) 30m (3) 26m (4) 28m

Q.61 A ball is projected from a certain point on the surface of a planet at a certain anglewith the horizontal surface.The horizontal and vertical displacement x and y vary with time t in second as:
x = 10 √3 t and y = 10t – t²
Themaximumheight attained bythe ball is
(1) 100m (2) 75m (3) 50m (4) 25m.

Q.62 The horizontal and verticle distances travelled by a particle in time t are given by x = 6t and y= 8t – 5t². If g = 10m/sec², then the initial velocity of the particle is-
(1) 8m/sec (2) 10m/sec
(3) 5m/sec (4) Zero

Q.68 A body A is going from South to North and body B is going from West to East with identical velocity.
Then direction of relative velocity of A with respect toBis-
(1)North-West (2) South-West (3)North-East (4) South-East

Q.69 To cross the river in shortest distance, a swimmer should swim making angle θ with the upstream.What is the ratio of the time taken to swim across in the shortest time to that in swimming across over shortest distance. [Assume speed of swimmer in stillwater is greater than the speed of river flow]
(1) cosθ (2) sin θ (3) tan θ (4) cot θ

Q.70 Aman standing on a road hold his umbrella at 30º with the vertical to keep the rain away.He throws the umbrella and starts running at 10 km/hr.He finds that raindrops are hitting his head vertically, the speed of raindrops with respect to the roadwill be -
(1) 10 km/hr (2) 20 km/hr (3) 30 km/hr (4) 40 km/hr

Q.71 It is raining vertically downwardswith a velocity of 3 kmh^–1 .Amanwalks in the rainwith a velocity of 4 kmh^–1. The rain drops will fall on theman with a relative velocity of ;
(1) 1 kmh^–1 (2) 3 kmh^–1 (3) 4 kmh^–1 (4) 5 kmh^–1

Q.72 Raindrops are falling verticallywith a velocity of 10m/s. To a cyclistmoving on a straight road the raindrops appear to be coming with a velocity of 20 m/s. The velocity of cyclist is :
(1) 10 m/s (2) 10 √3 m/s (3) 20 m/s (4) 20 √3 m/s