Atrain is traveling down a straight track at 27 m/s when the engineer applies the brakes, resulting in an acceleration of −1.0 m/s2 as long as the train is in motion. how far does the train move during a 54-s time interval starting at the instant the brakes are applied?

364.5 m

Explanation:

Initial speed = u = 27 m/s

Acceleration = a = -1 m/s²

Distance = s

Time taken = t

So, in 27 seconds the train will stop and will have travelled a distance of 364.5 m.

So, the rest of the 27 seconds it will not move.

Hence, the distance covered in 54 seconds will be 364.5 m.

the focus of lesson 1 is newton's first law of motion - sometimes referred to as the law of inertia. newton's first law of motion is often stated as. an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

explanation:

what was the acceleration of the 2 kg cart?

⇒ 16.0 cm/s2

what was the acceleration of the 4 kg cart?

⇒ 8.1 cm/s2

what was the acceleration of the 6 kg cart?

⇒ 5.3 cm/s2