Một chất điểm chuyển động nhanh dần đều trong 4 giây đầu vật đi được 24m, trong 4 giây tiếp theo đi được 64m. Tốc độ ban đầu của vật là:        

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

  Unit 9 is ___________ than Unit 10.

• Choose the best answer for the following sentence:

  Our car traveled __________ an average speed of 60 mph.
   

• Choose the best answer for the following sentence:

  He stopped ____________ Park Avenue.
   

• Choose the best answer for the following sentence:

  He hasn’t been cheerful ____________ the death of his close friend.
   

• Choose the best answer for the following sentence:

  He has just left __________ the airport to meet his friend.
   

• Choose the best answer for the following sentence:

  That part of the country is famous __________it's pineapples.
   

• Choose the best answer for the following sentence:

  We went there ___________ car and stayed there for the whole day.
  
  

• Choose the best answer for the following sentence:

  We started our journey ___________ foot.
   

• Choose the best answer for the following sentence:

  He always prevents me _________ doing my duty.

• Choose the best answer for the following sentence:

  I write letters ___________ my left hand.