Equations of linear motion KLB PHYSICS FORM 3 NOTES

LINEAR MOTION KLB PHYSICS FORM 3 NOTES PDF

Equations of linear motion KLB PHYSICS FORM 3 NOTES

Equations of linear motion KLB PHYSICS FORM 3 NOTES 1024 681 refilwe

Equations of linear motion

The following equations are applied for uniformly accelerated motion;

  • v = u + at
  • s = ut + ½ at2
  • v2= u2 +2as

Examples

1. A body moving with uniform acceleration of 10 m/s2 covers a distance of 320 m. if its initial velocity was 60 m/s. Calculate its final velocity.

Solution

V2 = u2 +2as

= (60) +2×10×320

=3600+6400

= 10,000

Therefore v= (10,000)1/2

v= 100m/s

2. A body whose initial velocity is 30 m/s moves with a constant retardation of 3m/s. Calculate the time taken for the body to come to rest.

Solution

v = u+at

0= 30-3t

30=3t

t= 30 seconds.

3. A body is uniformly accelerated from rest to a final velocityof 100m/s in 10 seconds. Calculate the distance covered.

Solution

s=ut+ ½ at2

=0×10+ ½ ×10×102

= 1000/2=500m

Motion under gravity.

READ  Linear Motion klb physics form 3 notes pdf

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