Question

A racecar travling on a straight part of a track has an initial velocity of 15.0 m/s. If the car accelerates at 3.00 m/s/s, how long until the car reaches 30.0 m/s?​

Answer 1

Answer:

24445

Explanation:

d44edf4445ff44f444

Answer 2

Aɴsᴡᴇʀ:

• Time taken by the car = 5 seconds

Gɪᴠᴇɴ:

• A racecar travling on a straight part of a track has an initial velocity of 15.0 m/s. If the car accelerates at 3.00 m/s/s, how long until the car reaches 30.0 m/s?

Nᴇᴇᴅ ᴛᴏ ғɪɴᴅ:

• Time taken by the car = ?

Solution:

Bʏ ᴜsɪɴɢ ᴛʜᴇ ғɪʀsᴛ ᴇǫᴜᴀᴛɪᴏɴ ᴏғ ᴍᴏᴛɪᴏɴ:

• v = u + at

Pᴜᴛᴛɪɴɢ ᴛʜᴇ ᴠᴀʟᴜᴇs:

➥ 30 = 15 + 3 × t

➥ 30-15 = 3 × t

➥ 15 = 3 × t

➥ Time = 15/3

➥ Time = 5

Tʜᴇʀᴇғᴏʀᴇ:

• Time taken by the car = 5 seconds

▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬