Question

ANSWER ALL THEQUESTIONS GIVEN IN THE FIGURE. BEST ANSWER WILL BE THE BRAINIEST.

Answer 1

Answer:

1) A body is said to be in uniform acceleration when it is increasing its speed equally in equal intervals of time. A body is said to be in non uniform acceleration when it is increasing unequal amount of speed in equal intervals of time.

2) A bus decreases its speed from 80 km/h to 60 km/h in 5 seconds. Find the acceleration of the bus. So, the bus is decelerating at a rate of -1.11 m/s2.

3) A train starting from a railway station and moving with uniform acceleration attains a speed of 40 km/h in 10 minutes.

Answer 2

Explanation:

• When a body moves along a straight line with uniform speed or steady speed is called Uniform motion. When a body moves along a straight line but with variable or change in speed is called non-uniform motion
• Given: t=10 min=10×60=600s
• Initial speed of train is given as: u=0 ms−1
• Final speed of train is given as: v=40 km h−1=360040×1000=11.1 ms−1
• Now acceleration is given by the relation:
• a=tv−u=60011.1−0=0.0185 ms−2