KinematicsMotion in a Plane (NEET Physics): Questions 11  15 of 15
Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2098 questions. Access all new questions we will add tracking exampattern and syllabus changes. View Sample Explanation or View Features.
Rs. 550.00 or
Question number: 11
» Kinematics » Motion in a Plane
Question
The height y and the distance x along the horizontal at plane of the projectile on a certain planet (with no surrounding atmosphere) are given by y = (8t  5t2) metre and x = 6t metre where t is in second. The velocity with which the projectile is projected is
Choices
Choice (4)  Response  

a.  6 m/s 

b.  8 m/s 

c.  10 m/s 

d.  Data is insufficient 

Question number: 12
» Kinematics » Motion in a Plane
Question
A projectile is thrown at an angle 0 and (90°  0) from the same point with same velocity 98 m/s. The heights attained by them, if the difference of heights is 50 m will be (in m)
Choices
Choice (4)  Response  

a.  270, 220 

b.  200, 150 

c.  250, 200 

d.  300, 250 

Question number: 13
» Kinematics » Motion in a Plane
Question
A particle is moving in a plane with a velocity given by, u = u0 i + (∞a cos ∞t) j, where i and j are unit vectors along x and yaxes respectively. If the particle is at the origin at t = 0, then its distance from the origin at time t = 3π/2∞ will be
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 14
» Kinematics » Motion in a Plane
Question
When the angle of elevation of a gun are 60° and 30° respectively, the height it shoots are h1 and h2 respectively, hj/h2 equal to –
Choices
Choice (4)  Response  

a.  1/3 

b.  2/1 

c.  1/2 

d.  3/1 

Question number: 15
» Kinematics » Motion in a Plane
Question
A man whirls a stone round his head on the end of a string 4.0 metre long. Can the string be in a horizontal, plane? If the stone has a mass of 0.4 kg and the string will break, if the tension in it exceeds 8 N. The smallest angle the string can make with the horizontal and the speed of the stone will respectively be (Take g = 10 m/sec ^{2})
Choices
Choice (4)  Response  

a.  45°, 8.2 m/s 

b.  60°, 7.7 m/s 

c.  60°, 8.7 m/s 

d.  30°, 7.7 m/s 
