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#Speed at Maximum Height

3 public questions tagged with this topic.

A projectile is launched at 40m/s at 37∘. What is its speed at maximum height? (Take g\=10m/s2,cos⁡37∘\=0.8)

Projectile motion splits into horizontal uniform and vertical accelerated motion per NCERT Chapter 4. Range R=u²sin2θ/g and max height H=u²sin²θ/2g. Using given u, θ, g, calculation yields 32 m/s. Hence option D satisfies projectile formulas.

Ref: NCERT Class 11 Physics > Chapter 4: Motion in a Plane > Topic: Projectile and Circular Motion Basics

A projectile is launched at 45m/s at 60∘. What is its speed at the maximum height? (Take g\=10m/s2,cos⁡60∘\=0.5)

Projectile motion splits into horizontal uniform and vertical accelerated motion per NCERT Chapter 4. Range R=u²sin2θ/g and max height H=u²sin²θ/2g. Using given u, θ, g, calculation yields 15 m/s. Hence option C satisfies projectile formulas.

Ref: NCERT Class 11 Physics > Chapter 4: Motion in a Plane > Topic: Two-Dimensional Motion and Vectors