Physics
Grade-10
Easy

Question

Suppose that a sled is accelerating at a rate of 4 m/s2. If the net force is tripled and the mass is halved, then what is the new acceleration of the sled?

  1. 1 over 36 bevelled m over s squared
  2. 36 m/s2
     
  3. 9 over 4 bevelled m over s squared
  4. 4 over 9 bevelled m over s squared

hintHint:

F=ma

The correct answer is: 36 m/s2
 


    The new acceleration would be 24m/s2.
    F o r c e space equals space m a s s space cross times a c c e l e r a t i o n space
N e w space c o n d i t i o n space i s space N e w space F left parenthesis n e w right parenthesis equals space 3 F space a n d space m left parenthesis n e w right parenthesis space equals space m over 2
s o space F left parenthesis n e w right parenthesis equals m left parenthesis n e w right parenthesis cross times a c c e l e r a t i o n left parenthesis n e w right parenthesis
3 F equals m over 2 cross times a left parenthesis n e w right parenthesis
6 F equals m a left parenthesis n e w right parenthesis...... left parenthesis 2 right parenthesis
a l s o space F equals m cross times 4............ left parenthesis 1 right parenthesis
F r o m space a b o v e space t w o space e q u a t i o n s space w e space g e t space a equals 24 space m divided by s squared

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