A ball is thrown vertically upward froma height of 40 m and hits the groundwith a speed that is three times itsinitial speed. What is the time taken (insec) for the fall (Take 𝑔 = 10 𝑚/𝑠2)
Question
A ball is thrown vertically upward froma height of 40 m and hits the groundwith a speed that is three times itsinitial speed. What is the time taken (insec) for the fall (Take 𝑔 = 10 𝑚/𝑠2)
Solution
To solve this problem, we need to use the equations of motion.
Step 1: Identify the given values Initial height (h) = 40 m Acceleration due to gravity (g) = 10 m/s^2 Final velocity (v) = 3u (where u is the initial velocity)
Step 2: Use the equation of motion to find the initial velocity We know that v^2 = u^2 + 2gh Substitute the given values
Similar Questions
An object is thrown downward with an initial velocity of 3 feet per second. The relationship between the distance 𝑠 it travels and time 𝑡 is given by 𝑠=3𝑡+16𝑡2. How long does it take the object to fall 70 feet?It takes seconds for the object to fall 70 feet.
A ball is thrown vertically downwards with an initial speed of 4.0 m s-1. The ball hits the groundwith a speed of 16 m s-1. Air resistance is negligible. What is the time of fall and what is thedistance travelled by the ball?
A body is thrown up with a velocity 40m𝑠-1. At same time another body is dropped from a height 40 m. Their relative acceleration after 1.3 seconds is
h=−4.9t 2 +25tThe equation above expresses the approximate height ℎ, in meters, of a ball 𝑡𝑡 seconds after it is launched vertically upward from the ground with an initial velocity of 25 meters per second. After approximately how many seconds will the ball hit the ground?A3.5B4.0C4.5D5.0
A ball is thrown upward with a velocity of 100 m/s. Find the time taken to reach the ground.
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.