Question

A trainis moving with uniform speed which covers 240m in 4s. Calculate the time it will take to cover 480m​

Answer 1

Given:

• Traing is moving in a uniform speed
• The train travels 240m in 4s

To find:

• Time taken to cover 480m

Solution:

For 240m → time taken = 4s

Multiplying with 2 on both the sides

240 × 2 → 4 × 2

480m → 8s

If we observe clearly

For 480m → time taken = 8s

Hence , time taken to cover 480m = 8s

★ Knowledge enhancer:

Knowing about kinematics

Kinematics : Kinematics is a branch of mechanics

which deals with 2D motion

Kinematic equations

1st equation : v = u + at

2nd equation : s = ut + 1/2 at²

3rd equation : v² - u² = 2as

Answer 2

Answer:

1st (not applicable to every example)

240 ×2 = 480

that means double, so increase time 2 times i.e 8 sec..

2nd method

cross multiplication

480×4/240

= 8 sec..

( all values in m/s so no need to convert )