Plz answer them I need answers ASAP

4. 13.04m/s²

5. 4x10^11m/s²

6. –3m/s²

Explanation:

Acceleration is defined as rate of change of velocity with time. Mathematically it is represented as:

a = (v – u)/t

a is the acceleration.

v is the final velocity.

u is the initial velocity.

t is the time

With the above formula, we can obtain the acceleration of each question.

4. Determination of the acceleration of the spacecraft.

Data obtained from the question include the following:

Initial velocity (u) = 0

Final velocity (v) = 67.8m/s

Time (t) = 5.2secs

Acceleration (a) =..?

a = (v – u)/t

a = (67.8 – 0)/5.2

a = 13.04m/s²

Therefore, the acceleration of the spacecraft is 13.04m/s².

5. Determination of the acceleration of the electron.

Data obtained from the question include the following:

Initial velocity (u) = 0

Final velocity (v) = 2.6x10^5m/s

Time (t) = 6.5x10^-7secs

Acceleration (a) =..?

a = (v – u)/t

a = (2.6x10^5 – 0)/ 6.5x10^-7

a = 4x10^11m/s²

Therefore, the acceleration of the electron is 4x10^11m/s².

6. Determination of the acceleration of the truck.

Data obtained from the question include the following:

Initial velocity (u) = 20m/s

Final velocity (v) = 5m/s

Time (t) = 5secs

Acceleration (a) =..?

a = (v – u)/t

a = (5 – 20)/5

a = –15/5

a = –3m/s².

Therefore, the acceleration of the truck is –3m/s².