SATHEE: Kinematics Question 400

Kinematics Question 400

Question: A rocket it’s fired upward from the earth’s surface such that it creates an acceleration of $19.6 m s^{- 2}$ . If after 5 s, it’s engine it’s switched off, the maximum height of the rocket from earth’s surface would be

Options:

A) 980 m

B) 735 m

C) 490 m

D) 245 m

Show Answer

Answer:

Correct Answer: B

Solution:

Velocity when the engine it’s switched off $v = 19.6 \times 5 = 98 m s^{- 1} h_{max} = h_{1} + h_{}$ Where $h_{1} = \frac{1}{2} a t^{2}, h_{2} = \frac{v^{2}}{2 a}$

$h_{max} = \frac{1}{2} \times 19.6 \times 5 \times 5 + \frac{98 \times 98}{2 \times 9.8} = 73.5 m$

Kinematics Question 400

Question: A rocket it’s fired upward from the earth’s surface such that it creates an acceleration of $19.6 m s^{- 2}$ . If after 5 s, it’s engine it’s switched off, the maximum height of the rocket from earth’s surface would be

Options:

Answer:

Solution:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

Kinematics Question 400

Question: A rocket it’s fired upward from the earth’s surface such that it creates an acceleration of 19.6ms−2 . If after 5 s, it’s engine it’s switched off, the maximum height of the rocket from earth’s surface would be

Options:

Answer:

Solution:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

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Question: A rocket it’s fired upward from the earth’s surface such that it creates an acceleration of $19.6 m s^{- 2}$ . If after 5 s, it’s engine it’s switched off, the maximum height of the rocket from earth’s surface would be