Author Question: A moving particle starts at an initial position (1, 0, 0) with initial velocity i - j + k. Its ... (Read 44 times)

nelaaney · **on:** May 27, 2021

Question 1

Find the acceleration at time t = -1 of a particle whose position at time t is given by r(t) = 4t i + t² j.
◦ a(-1) = -2j
◦ a(-1) = i - 2j
◦ a(-1) = i + 2j
◦ a(-1) = 2j
◦ a(-1) = 2i + j

Question 2

A moving particle starts at an initial position (1, 0, 0) with initial velocity i - j + k. Its acceleration at time t is a(t) = 4t i + 6t j + k. Find its velocity and position at time t > 0.
◦ v(t) = (2t² + 1) i + (3t² - 1) j + (t + 1) k; r(t) = (t³ + t + 1) i + (t³ - t) j + (t² + t) k
◦ v(t) = (2t² - 1) i + (3t² - 1) j - (t + 1) k; r(t) = (

t³ + t + 1) i - (t³ - t) j + (

t² + t) k
◦ v(t) = (2t² + 1) i + (3t² - 1) j + (t + 1) k; r(t) = (

t³ + t + 1) i + (t³ - t) j + (

t² + t) k
◦ v(t) = (2t² + 1) i + (3t² - 1) j + (t + 1) k; r(t) = (t³ + t + 1) i + (t³ - t) j - (t² + t) k
◦ v(t) = (2t² + 1) i + (3t² + 2) j + (t + 1) k; r(t) = (

t³ + t + 1) i + (t³ + 2t) j + (

t² + t) k

momtoalll · **Reply #1 on:** May 27, 2021

A FREE account is required to view all solutions!

Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.

Answer Preview

Only 25% of students answer this correctly