Question

a car of mass 1000kg accelerates uniformly from rest to velocity of 54km/h in 5 second calculates it's (a) acceleration (b) gain in kinetic energy ​

Answer 1

Step-by-step explanation:

• A = v-u/ at
• v= 54km/h , v= 54× 5/18 = 15
• v= 15m/sec.
• t= 5sec.
• A= v-u/t
• A= 15-0/5 = 3m/sec²

1. b) kinetic energy k = 1/ 2mv²
2. 1/2×1०००×54×54
3. 1000×27×54
4. 1.458000
5. 1.458× 10 power 6

Answer 2

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