Answer:
a) 
b) a = 5.59 m/s²
Explanation:
given,
total distance traveled by the car to stop is 56.9 m when speed of vehicle is 80 km/h or 80 × 0.278 = 22.24 m/s
total distance traveled by the car to stop is 25.7 m when speed of vehicle is 50.7 km/h or 50.7 × 0.278 = 14.09 m/s
using stopping distance formula
................(1)
..............(2)
on solving both the equation we get
a = 5.59 m/s²
now reaction time calculation
Answer:
B) Blackbody radiation
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Can you please reword your question I can’t understand
The work done is 150 joules
Explanation:
Work occurs when a force (F) acts on an object to move it some
distance (d) from the start point
→ Work done = F × d
The S.I unit of work is Joule
A force of 50 N is used to move a footstool 3 m
→ F = 50 N
→ d = 3 m
→ Work done = F × d
Substitute the values of F and d in the rule
→ Work done = 50 × 3 = 150 joules
The work done is 150 joules
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