A ball is dropped from a height of 61 feet. Its height above ground (in feet) t seconds later is given by s(t)=−16t2+61.
- At what time does the ball hit the ground?
- What is the instantaneous velocity of the ball when it hits the ground?
- What is the average velocity during its fall?
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Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)
Enter DNE for Does Not Exist, oo for Infinity
Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)
Enter DNE for Does Not Exist, oo for Infinity
Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)
Enter DNE for Does Not Exist, oo for Infinity