SATHEE: Motion in a Straight Line

Motion in a Straight Line - Result Question 43

45. If a ball is thrown vertically upwards with a velocity of $40 m / s$ , then velocity of the ball after two seconds will be ( $g = 10 m / s^{2}$ )

[1996]

(a) $15 m / s$

(b) $20 m / s$

(d) $28 m / s$

Show Answer

Answer:

Correct Answer: 45. (b)

Solution:

(b) Initial velocity $(u) = 40 m / s$ Acceleration $a = - g m / s^{2} = - 10 m / s^{2}$

Time $= 2$ seconds

By Ist equation of motion,

$v = u + a t$

$v = 40 - 10 (2) = 20 m / s$

Play Store

App Store

Ask SATHEE

Welcome to SATHEE !
Select from 'Menu' to explore our services, or ask SATHEE to get started. Let's embark on this journey of growth together! 🌐📚🚀🎓

I'm relatively new and can sometimes make mistakes.
If you notice any error, such as an incorrect solution, please use the thumbs down icon to aid my learning.
To begin your journey now, click on "I understand".

Motion in a Straight Line - Result Question 43

45. If a ball is thrown vertically upwards with a velocity of 40m/s, then velocity of the ball after two seconds will be ( g=10m/s2 )

Answer:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

Menu

45. If a ball is thrown vertically upwards with a velocity of $40 m / s$ , then velocity of the ball after two seconds will be ( $g = 10 m / s^{2}$ )