How long would it take a train traveling at 18 m/s to travel 7,500 m? Answer in minutes. Please I need help !!

Which statement best describes who the period and frequency of electromagnetic was change between gamma rays and microwaves? a) the period and frequency stay the same. b) the period increases and the frequency decreases. c) the period decreases and the frequency increases. d) the period increases and the frequency increases.

Given the position vector of the particle r(t)=(t+1)i+(t^2−1)j+2t k, find the particle's velocity and acceleration vectors at t=1

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?